Excretory+System

Excretory system ** Science Factfile **


 * Your blood passes through the kidneys 300 times a day.
 * The nephrons clean all your blood in 45 minutes.
 * Every day the nephrons send about six cups of urine to the bladder.

yellow water = urine brown water = poo []

media type="custom" key="9130054"

The word excretion means the removal of waste substances from the body. Several organs are involved with the excretory system, including the kidneys, sweat glands, lungs and rectum. The primary organs of excretions, however, are the ** kidneys **. Excretion is vital to the health of the body because the wastes are poisonous. If the wastes build up and are not eliminated, they can cause serious problems.

[] The main role of the excretory system is to filter out cellular wastes, toxins and excess water or nutrients from the circulatory system. The excretory system is a system of organs that removes waste products from the body. When cells in the body break down proteins (large molecules that are essential to the structure and functioning of all living cells), they produce wastes such as urea (a chemical compound of carbon, hydrogen, nitrogen, and oxygen). When cells break down carbohydrates (compounds consisting of carbon, hydrogen, and oxygen and used as a food), they produce water and carbon dioxide as waste products. If these useless waste products are allowed to accumulate in the body, they would become dangerous to the body's health. The kidneys, considered the main excretory organs in humans, eliminate water, urea, and other waste products from the body in the form of urine. Other systems and organs in the body also play a part in excretion. The respiratory system eliminates water vapor and carbon dioxide through exhalation (the process of breathing out). The digestive system removes feces, the solid undigested wastes of digestion, by a process called defecation or elimination. The skin also acts as an organ of excretion by removing water and small amounts of urea and salts (as sweat).

** Urinary system **

The kidneys are bean-shaped organs located at the small of the back near the spinal column. The left kidney sits slightly higher than the right one. The size of an adult kidney is approximately 4 inches (10 centimeters) long and 2 inches (5 centimeters) wide. To maintain human life, it is necessary for at least one of the kidneys to function properly.

Blood carries waste products to the kidneys via the renal artery. Inside each kidney, blood is transported to 1.2 million filtering units called nephrons (pronounced NEFF-rons). The cells in nephrons take in the liquid portion of the blood and filter out impurities (urea, mineral salts, and other toxins). Necessary substances such as certain salts, water, glucose (sugar), and other nutrients are returned to the blood stream via the renal vein.

Read more: [|Excretory System - humans, body, used, water, process, life, chemical, form, carbon, oxygen, cells, cause, waves, part, Urinary system, Urinary disorders] []

** Words to Know **

** Antidiuretic hormone: ** Chemical secreted by the pituitary gland that regulates the amount of water excreted by the kidneys. ** Hemodialysis: ** Process of separating wastes from the blood by passage through a semipermeable membrane. ** Nephron: ** Filtering unit of the kidney. ** Urea: ** Chemical compound of carbon, hydrogen, nitrogen, and oxygen produced as waste by cells that break down protein.

** Ureter: ** Tube that carries urine from a kidney to the urinary bladder. ** Urethra: ** Duct leading from the urinary bladder to outside the body through which urine is eliminated. The waste-containing fluid that remains in the nephrons is called urine. Urine is 95 percent water, in which the waste products are dissolved. A pair of tubes called ureters carry urine from the kidneys to the urinary bladder. Each ureter is about 16 to 18 inches (40 to 45 centimeters) long. The bladder is a hollow muscular sac located in the pelvis that is collapsed when empty, but pear-shaped and distended when full. The bladder in an adult can hold more than 2 cups (0.6 liters) of urine. The bladder empties urine into the urethra, a duct leading to outside the body. In males, the urethra is about 8 inches (20 centimeters) long. In females, it is less than 2 inches (5 centimeters) long. A sphincter muscle around the urethra at the base of the bladder controls the flow of urine between the two. The volume of urine excreted is controlled by the antidiuretic hormone (ADH), which is released by the pituitary gland (a small gland lying at the base of the skull). If an individual perspires a lot or fails to drink enough water, special nerve cells in the hypothalamus (a region of the brain controlling body temperature, hunger, and thirst) detect the low water concentration in the blood. They then signal the pituitary gland to release ADH into the blood, where it travels to the kidneys. With ADH present, the kidneys reabsorb more water from the urine and return it to the blood. The volume of urine is thus reduced. On the other hand, if an individual takes in too much water, production of ADH decreases. The kidneys do not reabsorb as much water, and the volume of urine is increased. Alcohol inhibits ADH production and therefore increases the output of urine.

[]

Urine is the result of the excretory system balancing the amount of water and salts in your body. We said the system is small. Your **kidneys** are the core organs involved in the excretory system. Related body parts include the ureters, bladder, and urethra. Once the urine passes through your urethra, that's it, it's out of your body.

[]

**Post your essays below**







Excretory System
You know what is excretory system? Excretory system is where your food get digest. the main organ in our body in our body is kidneys. Kidneys help us digest food. You know what are kidneys? Kidneys are 4 inches long and 2 inches wide. To maintain human's life, it is necessary for at least one af the kidneys to function properly. Blood carries waste products by the rental artery. Blood is transported to 1.2 million filtering units called Nephrons.

You know what is Nephron? Nephron is the functional unit of the kidney. Nephron is responsible for the actual purification and filtration of the blood. The cell in nephrons take the liquid portion of the blood and filler OUT impurities. Necessary substance such as certain slats, water, gloueose and other nutrients are returned to the blood stream by the rental vein.

Do you know what happens when your kidney does not work? If our kidneys don't work we can't eat junk foods.There was one boy, but his kidneys are not working. So he had to clean his blood 3 time in one week.You know how he cleaned his blood? He cleaned by the machine that acts like kidneys. There are alot of people in the wold that the kidneys are not working. Sometimes if someone dies in accident. We can get their kidneys but we have to be very fast all the nise we can't get the kidney. If we move a kidney to another person who have kidney problem, we don't take the kidney that does not work, we put in any where in our body. They only wish their kidneys can work. It will fill bad feel bad after you eat if your kidneys aren't working. Kidney, are they important? Yes, they are important because if your kidney don't work your body will be full of foods. It is not good if your kidneys aren't working. Kidneys are important they are and we need them.

Jinjoo Kim G.5

The Excretory System Huh? Excretory? Oh... Excretory is the yuckiest system in our body. I guess!

The excretory system has a job to remove waste and toxins. Toxins are the bad thing that is not good for us. It excess water or nutrients. Other systems that may play in part are the respiratory system, digestive system and the skin. This system is quite related to the digestive system. There is a fact that the skin is the biggest organ of our body. The main organ in the excretory system is the kidneys. The excretory system is yucky but better than not having it.

There are 2 kidneys in our body. They are located at the back, above our hip. Both of our kidneys are 4 inches long and 2 inches wide. To maintain human life, we only need one kidney, though it is good to have 2. If we look closely, the kidneys are shaped like red beans. The blood carries waste product to the kidneys. For people who do not have a kidney, there is a machine that makes them survive. Actually, there are many people who do not have one. They need to put a needle through the skin and make the machine run like their kidneys. They need to do those 3 days every week. If people get involved in accidents, they quickly take out their working kidney and donate it to the people who don’t have kidneys. Kidney is a bit disgusting to say it out loud, though you will be ashamed to not have a kidney.

Blood is transported to 1.2 million filtering units called nephrons. The nephron is the unit of the kidney. Nephrons are functional units. The cells in nephrons take in liquid portion of blood and filter out impurities. The nephron is a part of the kidneys. Under the kidneys, there are lines that connect with the urinary bladder, called “urethra”.

After you pass the urethus, you will find the urine. Ureters carry urine from the kidneys to the urinary bladder. ADH is a short form of ‘Antidiuretic Hormone’. ADH controls the volume of the urine eliminate in our body. Eliminate means to get rid of. Actually, the urinary bladder is something like a balloon. Urine is the liquid production with is secreted by the kidneys. The urinary bladder is something like a balloon. The urinary bladder is connected with the kidneys.

The urinary bladder looks and seems like a balloon. The bladder empites urine into the urethra. The balloon likely place is where your solid and liquid waste is stored. If you are in an emergency to go to the toilet that means your balloon is full of waste that came down from the kidneys so your urethra will hut and pain. If you don’t pee right after you feel that you want to pee, then it will hurt. It will want to come out because if it doesn’t come out, it will be filled up more and more as soon as possible. One thing that I think it is very disgusting is, you are drinking your waste or other’s waste. It is something that is really unbelievable but water always gets recycled, cleaned and become fresh. So when water is fresh, most probably you will drink and have a bath with it.

These parts have different colors each part. The kidneys are brown! In some reason, most of the people say kidney is shaped like a red bean. Eating red beans (kidney beans) are good for your body because it gives nutrients, but it is not always good for your kidneys just because it is called kidney beans. The line, which is called the ureters are orange but kind of yellowish too! As you go down you will see a brown balloon, but it is kind of pink too.

Lastly, kidneys are very important so don’t try loosing it. If you didn’t have the system working normally, your urethra will burst with waste. Everybody sweats every day, and some people don’t even misses a day like my brother sweats every single day. Sweat is one of the liquid wastes from our body. There is a sweat gland, which makes us sweat. We lose a liter by sweating and breathing. In one day, 1700 liters of blood gets pumped. Excretory system is one of the systems you must, always have. I don’t want to miss my excretory system. Written by Ji Ae G5 Excretory system

In our body we need to have this EXCRETORY STSTEM because if we don’t we will not able to remove wastes, toxin from our body so we will be dead. The excretory system removes wastes, water, and toxin in the shape of liquid but digestive system removes wastes, food, and toxin in the shape of solid. The excretory system’s job is to remove wastes, toxin and excess water or nutrients from the circulatory system in the body. There are many organs in our body, the main excretory organ in our body is the kidneys. There are also other system and organs like respiratory system, digestive system and skin. The skin is the largest organ in our human body. The kidney is at the back of your stomach. The kidneys are 4 inches long and 2 inches wide. Human can live with only one kidney left. Antidiuretic hormone (ADH) controls the volume of urine eliminate the body, which is release by the pituitary gland. There was one boy his age was about 12 years old. His kidney doesn’t work, none of them. So three days a week he has to spend ten hours to clean his blood around the kidneys with the machine that is big about half of the car. He can get new from a dead man. The kidney has to be fresh so the dead man have to just die, then the doctor will take the kidney from the dead man and freeze it to make the kidney still work, then put it to the boy with broken. The doctor will put the kidneys under the old ones because it will use less time rather than cut the broken one off than put the new ones, but make sure it is connect to the same place/thing. The kidney will work by blood carrying waste products to the kidneys by the way of renal artery. Blood is transported to 1.2 million filtering units called nephron. The nephron is the functional unit of the kidney, responsible of the actual purifaition and filtration of the blood. A pair of tubes called uretres carries urine from the kidney to the urinary bladder. The bladder is a hollow muscular sac-pear-shaped and distended when full. The cells in nephron take in the liquid portion of the blood and filter out impurities. Necessary substances such as certain salts, water glucose (sugar), and other nutrients are returned to the blood stream by the way of the renal vein. With Antidiuretic hormone (ADH) present ---no water? What then? Then kidney resode! By sweating and breathing we lost two liters of water. If an individual perspires a lot or fails the drink enough water? What will happen? Hypothalamus detect the low water concentration in the blood then signal the pituitary gland to release Antidiuretic hormone (ADH) into the blood. When cells in our body break down proteins, they produce wastes such as urea. We must keep balance of the water in our body or we will die, rather the survive. By:Pat G.5 EXCRETORY SYSTEM- NATCHA

EXCRETORY SYSTEM IN OUR BODY AND HOW DOES ITS WORK??? What is excretory system??? Excretory system is the process of how urine comes out from our body. The main excretory organ in human is the kidneys. There are other systems which are related to excretory system, which are- respiratory system, digestive system and skin. Skin is the biggest organ in the human body.

<span style="font-family: Calibri; font-size: 12pt; line-height: 115%; margin: 0cm 0cm 10pt; text-indent: 21.3pt;">What does kidneys do? Your kidney removes waste, toxins and adds water or nutrients from the circulatory system in the body. You might be wondering what toxins mean. Well, toxins are a kind of poison in our body. Your kidneys are 4 inches long and 2 inches wide. To main human life, it is necessary for at least one kidney to function properly.

<span style="font-family: Calibri; font-size: 12pt; line-height: 115%; margin: 0cm 0cm 10pt; text-indent: 21.3pt;">How does your kidney work? First of all do you know what does you kidney produce? Well, your kidneys produce urine. Blood carries waste product to kidneys via the renal artery. Via means, by the way of!!! Blood is transported to 1.2 million filtering called nephrons. The cells in nephrons take waste things and capillaries in kidneys observers’ nutrients like water, sugar etc. these nutrients are returned to our body.

<span style="font-family: Calibri; font-size: 12pt; line-height: 115%; margin: 0cm 0cm 10pt; text-indent: 21.3pt;">What are Nephrons? The nephrons are the functional unit of the kidneys, responsible for the actual purification and filtration of the blood. How does this process ends? Urine travelling a pair of tubes called ureters carries urine from kidneys to the urinary bladder. The bladder empties urine into urethra. Then you go to the toilet.

<span style="font-family: Calibri; font-size: 12pt; line-height: 115%; margin: 0cm 0cm 10pt; text-indent: 21.3pt;">Do you know what Antidiuretic horome is? Antidiuretic horome controls the volume of urine eliminate the body, which is released by pituitary gland. The short form of Antidiuretic horome is (ADH). Do you know? That in one day 1,700 liters of blood is pumped through the kidneys.

<span style="font-family: Arial,Helvetica,sans-serif;">Now let’s know some fun facts about Excretory System. The bladder is as big as your brain. The skin acts as a sponge for oxygen. The Kidneys are half the size as your bladder. An estimated 7,850,000,000,000 gallons of fluid passes through the bladder and out through the urethra in the common person’s lifetime. The Ureters is the size of a spaghetti noodle. <span style="font-family: Arial,Helvetica,sans-serif;">As you urinate, your bladder starts to shrink only to grow larger when it fills with urine. <span style="font-family: Arial,Helvetica,sans-serif;">The kidneys have as much as 6,487,000,000 nephrons (things that filter the blood) inside of them. The Vein that leads to you kidney’s is the biggest in the body.

Excretory system is the process of how urine comes out from our body. Kidney removes waste, toxins and adds water or nutrients from the circulatory system in the body. T oxins are a kind of poison in our body. Your kidneys are 4 inches long and 2 inches wide. To main human life, it is necessary for at least one kidney to function properly. Blood carries waste product to kidneys via the renal artery. Via means, by the way of!!! Blood is transported to 1.2 million filtering called nephrons. The cells in nephrons take waste things and capillaries in kidneys observers’ nutrients like water, sugar etc. these nutrients are returned to our body. Urine travelling a pair of tubes called ureters carries urine from kidneys to the urinary bladder. The bladder empties urine into urethra. Then you go to the toilet. Antidiuretic horome controls the volume of urine eliminate the body, which is released by pituitary gland.

It is the yuckiest system in our body,maybe not but I think so.
Do you know about the Exretory system?Excretory system is the process of how urine comes out from our body. The excretory system removes wastes, water, and toxin in the shape of liquid but digestive system removes wastes, food, and toxin in the shape of solid. There are other systems which are related to excretory system, which are- respiratory system, digestive system and skin. Skin is the biggest organ in the human body.

Do you know what are kidneys?? Your kidney removes waste, toxins and adds water or nutrients from the circulatory system in the body. Toxins are the bad things in our body.Toxins are a kind of poison in our body. Your kidneys are 4 inches long and 2 inches wide. To main human life, it is necessary for at least one kidney to function properly.

Do you know what are nephrons?Nephrons are the functional unit of the kidney. Nephrons are responsible for the actual purification and filtration of the blood. Do you know how this process ends? Well, this process endsd by urine travelling, a pair of tubes called ureters carries urine from kidneys to the urinary bladder.

Do you know about the kidneys? Kidney removes the waste, toxins and adds water or nutrients from the circulatory system in the body. Blood is transported to 1.2 million filtering units called nephron. The nephron is the functional unit of the kidney, responsible of the actual purifaition and filtration of the blood. A pair of tubes called uretres carries urine from the kidney to the urinary bladder. The bladder is a hollow muscular sac-pear-shaped and distended when full.

<span style="font-family: 'Calibri','sans-serif'; font-size: 12pt; margin: 0cm 0cm 0pt;">After you pass the urethus, you will find the urine. Ureters carry urine from the kidneys to the urinary bladder. ADH is a short form of ‘Antidiuretic Hormone’. ADH controls the volume of the urine eliminate in our body. Eliminate means to get rid of. Actually, the urinary bladder is something like a balloon. Urine is the liquid production with is secreted by the kidneys. The urinary bladder is something like a balloon. The urinary bladder is connected with the kidneys.

<span style="font-family: 'Calibri','sans-serif'; font-size: 12pt; margin: 0cm 0cm 0pt;">These parts have different colors each part. The kidneys are brown! In some reason, most of the people say kidney is shaped like a red bean. Eating red beans (kidney beans) are good for your body because it gives nutrients, but it is not always good for your kidneys just because it is called kidney beans. The line, which is called the ureters are orange but kind of yellowish too! As you go down you will see a brown balloon, but it is kind of pink too.

<span style="font-family: 'Calibri','sans-serif'; font-size: 12pt; line-height: 115%; margin: 0cm 0cm 0pt; text-indent: 21.3pt;">There are 2 kidneys in our body. If we look closely, the kidneys are shaped like red beans. The blood carries waste product to the kidneys. For people who do not have a kidney, there is a machine that makes them survive. Actually, there are many people who do not have one. They need to put a needle through the skin and make the machine run like their kidneys. They need to do those 3 days every week. If people get involved in accidents, they quickly take out their working kidney and donate it to the people who don’t have kidneys. Kidney is a bit disgusting to say it out loud, though you will be ashamed to not have a kidney.

<span style="font-family: 'Calibri','sans-serif'; font-size: 12pt; line-height: 115%; margin: 0cm 0cm 0pt; text-indent: 21.3pt;">If you didn’t have the system working normally, your urethra will burst with waste. Everybody sweats every day, and some people don’t even misses a day like my brother sweats every single day. Sweat is one of the liquid wastes from our body. There is a sweat gland, which makes us sweat. We lose a liter by sweating and breathing. In one day, 1700 liters of blood gets pumped. Excretory system is one of the systems you must, always have. I don’t want to miss my excretory system. WRITTEN BY:YOSHITA G5

<The humans waste liquid system>
==== The main excretory system organs humans are kidneys. Other system and organ in the body also play a part in excretion respiratory system, digestive system, and skin. Excretory system removes liquid waste meaning pee. I know it’s disgusting, but what can I do. ==== ==== Kidneys are four (4) inches long and two (2) inches wide. To maintain human life, it is necessary for at one of the kidneys work properly. Kidneys are like red beans. We have two kidney, they are placed near spine in your back. They are not in the front. ==== ==== Do you know how kidneys work? Blood carries products to the kidneys via the renal artery. Blood is transported to 1.2 million filtering units called nephrons. The cells in nephrons take in liquid portion of blood and filter OUT impurities. Necessary substances such as certain salts, water, glucose (sugar) and other nutrients are returned to the blood stream via the renal vein. We can donate one kidney if we have two. Normally we do have two and some only people have one by birth. ==== ==== Do you know what nephorns are? The nephrone is the functional unit of the kidney, responsible for the actual purification filtration of the blood. Nephrone is one of the most important organs in our body. ==== ==== Urine is the proper word for pee. A pair of tubes called ureters carries the kidneys to the urinary bladder. A bladder is a hollow muscular sac-pear-shaped and distended when full. The bladder empties urine into urethra. When we lose water we need re-hydrate ourselves. ====

The short form for Antidiurectic hormone is ADH. Controls the volume of urine eliminate the body, which is released by the pituitary gland. Kidney has small, small parts inside it.
==== WARNING LISTEN CAREFULLY!!!!!!!! If an individual perspires a lot fails, to drink enough water? What will happen to you? Hypothalamus detects the low water contraction in the blood. With AD---present no water? What then? KIDNEYS REASORB!! If your kidneys don’t work you have to use a special kind of machine. ==== ==== Here are some fast facts!! We lose about 2 liters of water a day. When cells in the body break down proteins they produce waste such as urea. When cells break down carbohydrates, they produce water and carbon dioxide as waste products. We need to drink about 3 liters of water a day. ==== ==== The excretory system is one the most important system in our body. We need to get our liquid waste out by going to the bathroom once in a while. It is important to go to the bathroom and also so remember to drink lots of water. ====

By: Radhika G.5
<span style="display: block; font-family: Calibri,serif; text-align: center;">The Excretory System

<span style="display: block; font-family: Calibri,serif; text-align: center;"><The Most Disgusting but Amazing System in our Body>

<span style="display: block; font-family: Calibri,serif; text-align: left;">The excretory system is the system which gets rid of waste matter from our body. It also removes toxins, and excess water or nutrients from the circulatory system. There are some other systems and organs in our body which plays a part in the excretory system. They are the respiratory system, the digestive system, and the skin. The skin is the largest organ in our body, but the main excretory organ in humans, are the kidneys.

<span style="display: block; font-family: Calibri,serif; text-align: left;">Kidneys are either of the two organs in our body that removes waste products from the blood and produce urine. These kidneys are four inches long, two inches wide, and they weigh a hundred grams. Our body contains 2 kidneys, but plenty of people can live with one. This means to maintain human life, it is necessary for at least one of the kidney to function properly. The kidneys work by the blood carrying waste products to the kidneys via, or the “renal artery”. The blood is then transported to the “nephrones”.

<span style="display: block; font-family: Calibri,serif; text-align: left;">The nephrone is the filter part, of the excretory system. It is responsible for purification and filtration of the blood. The cells in nephrones filter out impurities. Then, the capillaries take out nutrients such as salts, water, sugar, and return it into the blood stream via, or the “renal vein”. After the blood is filtered, the waste will go down to the ureters.

<span style="display: block; font-family: Calibri,serif; text-align: left;">Before the urine goes out of our body, a pair of tubes called “ureters” carries the urine from the kidneys to the urinary bladder. Urine is the waste liquid that collects in the urinary bladder and that we pass from your body. The urinary bladder collects the liquid waste that flows from our ureters. Our ureters are the connector lines from the kidneys to the urinary bladder. In our body, there is also a substance called “Antidiuretic Hormone”, often called as “ADH”, which controls the volume of urine eliminate, which is released by the pituitary gland. We also often describe this system as a balloon, which blows up when air is filled, and shrinks when there is no air in it.

<span style="display: block; font-family: Calibri,serif; text-align: left;">The words “toxins” and “nutrients” are antonyms. Toxins are poisonous substances, especially ones that are produced by bacteria in plants and animals. Nutrients are substances that are needed to keep living things alive, and to help them grow. One of the ways our body excretes toxins is through sweat. When we exercise, we sweat a lot, and that way, we will also need more water. This is one example of how we can excrete toxins, or get rid of them.

<span style="display: block; font-family: Calibri,serif; text-align: left;">The excretory system has not so much difference with the digestive system. Though there are 2 main differences. When we eat something, some of our wastes come out by solid wastes, and some by liquid ones. Another difference is that this system’s main organ is the “kidneys”. Our kidneys function in a lot of parts, and it is the most important part in the excretory system.

<span style="display: block; font-family: Calibri,serif; text-align: left;">Written by: Mizuki- G5 <span style="display: block; font-family: Calibri,sans-serif; font-size: 12pt; margin: 0cm 0cm 0pt; text-align: left;"> Walter G5

<span style="display: block; font-family: Calibri,sans-serif; font-size: 12pt; margin: 0cm 0cm 0pt; text-align: center;"> Excretory System

<span style="display: block; font-family: Calibri,sans-serif; font-size: 12pt; margin: 0cm 0cm 0pt; text-align: left; text-indent: 12pt;"> The main excretory organs in humans are the kidneys. Some system and organs are part in excretory system. The respiratory system, digestive system, and the skin are part in excretory system. Excretory system removes toxic and more things that are from the circulatory system. Kidneys are 4 inches long and 2 inches wide.

<span style="display: block; font-family: Calibri,sans-serif; font-size: 12pt; margin: 0cm 0cm 0pt; text-align: left; text-indent: 12pt;"> Some people have more than 2 kidneys and some people have only one. This is because if some people have only one that means maybe one kidney was destroyed so they go to the hospital and takes it off and if some people have more than 2 maybe that means both of the kidneys don’t work so they put another one in their body. The kidneys are connected to the urinary bladder. They are connected by the ureters. In urinary bladder there are liquid wastes called urine. When the urinary bladder is full, you will feel you want to go to the toilet.

<span style="display: block; font-family: Calibri,sans-serif; font-size: 12pt; margin: 0cm 0cm 0pt; text-align: left; text-indent: 11.25pt;"> Our blood passes through our kidneys 300 times per day. Blood is transported to nephrons about 1.2 million. Nephrons are functional units of the kidneys. Nephrons clean our blood about 40 to 50 minutes. Nephrons give the urinary bladder about six cups of urine everyday.

<span style="display: block; font-family: Calibri,sans-serif; font-size: 12pt; margin: 0cm 0cm 0pt; text-align: left; text-indent: 11.25pt;"> A normal kidney contains 800,000 to 1.5 million nephrons. Kidneys reabsorb when you don’t drink much water. In the excretory system there are ureters, urinary bladder, urethra and kidneys. When our urine comes out of our body the bad things also come out together. ADH stands for Antidiuretic hormone. ADH controls the volume of urine eliminates.

<span style="display: block; font-family: Calibri,sans-serif; font-size: 12pt; margin: 0cm 0cm 0pt; text-align: left; text-indent: 11.25pt;"> Ureters are the tube that that urine goes down from kidneys to urinary bladder. If there were no kidneys in our body I think the urine will over float in our body. Excretory system is in our body, because excretory system helps us get rid of urine. It also absorbs protein. Excretory system is a passive biological system that removes excess. These help we get proteins and more good things from liquid that we drink.

<span style="display: block; font-family: Calibri,sans-serif; font-size: 12pt; margin: 0cm 0cm 0pt; text-align: left; text-indent: 11.25pt;"> These things are very important, because they help absorb water and let the bad things go away from our body. The best way to be healthy is drink lots of water everyday, so your kidneys won’t reabsorb the old again. If your excretory system didn’t work properly you would had a very hard time and you would have died. Kidneys are the main part in excretory system, because they absorb water and give away the bad things to the urinary bladder. Lastly ends it in the urethras. <span style="display: block; font-family: Calibri,sans-serif; font-size: 12pt; margin: 0cm 0cm 0pt; text-align: left; text-indent: 11.25pt;"> The Excretory system <span style="display: block; font-family: Calibri,sans-serif; font-size: 12pt; margin: 0cm 0cm 0pt; text-align: left; text-indent: 11.25pt;"> Excretory system: another important system for living_Ink

<span style="display: block; font-family: Calibri,sans-serif; font-size: 12pt; margin: 0cm 0cm 0pt; text-align: left; text-indent: 11.25pt;"> Hello! Today, I will tell you about excretory system! The main excretory organ in humans is the kidneys. The kidney is 4 inches long and 2 inches wide (inch = 2.5). To maintain human life, it is necessary for at lest one of the kidneys to function properly. The kidney removes wastes, toxin, and excess water or nutrients from the circulatory system. Other systems and organs in the body also play a part in excretion; respiratory system, digestive system, and skin.

<span style="display: block; font-family: Calibri,sans-serif; font-size: 12pt; margin: 0cm 0cm 0pt; text-align: left; text-indent: 11.25pt;"> Do <span style="font-family: Calibri,sans-serif;">you know how kidneys work? <span style="color: black; font-family: Calibri,sans-serif;">The kidneys are bean-shaped organs, each about the size of a fist. They are located near the middle of the back, just below the rib cage, one on each side of the spine. <span style="font-family: Calibri,sans-serif;">Blood carries waste products to the kidneys via the “renal artery”. Via means by the way of!! Blood is transported to 1.2 million filtering units called “nephrons”. In one day, 1700 liters of blood it pumped through the kidneys. A person’s kidneys process about 200 quarts of blood to safe out about 2 quarts of waste produces and extra water every day.

<span style="display: block; font-family: Calibri,sans-serif; font-size: 12pt; margin: 0cm 0cm 0pt; text-align: left; text-indent: 36pt;"> What are nephrons? The nephron is the smallest functional unit of the kidney. It is responsible for the actual purification and filtration of the blood. Necessary substances such as certain salts, water, glucose (sugar), and other nutrients are returned to the blood stream via the renal vein. The cells in nephrons take in the liquid portion of the blood and filter out impurities.

<span style="display: block; font-family: Calibri,sans-serif; font-size: 12pt; margin: 0cm 0cm 0pt; text-align: left; text-indent: 11.25pt;"> You know, the final product of excretory system is urine. Let’s see how urine travelling? A pair of tubes called ureters carries urine from the kidneys to the urinary bladder. The bladder is a hollow muscular sec-pear-shaped and distended when full. The bladder empties urine into the urethra. When cells in the body break down proteins, they produce wastes such as urea.

<span style="display: block; font-family: Calibri,sans-serif; font-size: 12pt; margin: 0cm 0cm 0pt; text-align: left; text-indent: 11.25pt;"> <span style="font-family: Calibri,sans-serif;">What is the antidiuretic hormone or ADH? The antidiuretic hormone (ADH) controls the volume of urine eliminates. Also known as **<span style="font-family: Calibri,sans-serif; font-weight: normal;">arginine vasopressin **, a human [|hormone] that is mainly released when the body is low on water. Wastes are released by the pituitary production gland. ADH has an antidiuretic action that prevents the production of dilute urine.

<span style="display: block; font-family: Calibri,sans-serif; font-size: 12pt; margin: 0cm 0cm 0pt; text-align: left; text-indent: 11.25pt;"> Don’t forget this! If an individual perspires a lot or fails to drink enough water, what will happen?? Hypothalamuses detect to low water concentration in the blood then signal the pituitary gland to release ADH into the blood. With ADH present-no water! Kidneys reabsorb. When cells in the body break down proteins, they produce wastes such as urea. When cells in the body break down carbohydrates, they produce water and carbon dioxide. By sweating and breathing, we lose 1 liter of water every day. So, we must drink enough water (3 liters) in a day. <span style="display: block; font-family: Calibri,sans-serif; font-size: 12pt; margin: 0cm 0cm 0pt; text-align: left; text-indent: 11.25pt;"> Ink

** The Excretory system **

<span style="color: black; display: block; font-family: Calibri; font-size: 12pt; text-align: left; text-indent: 36pt;"> The excretory system is a system that connects to the system called “Digestive system”. The excretory system starts form our mouth. The excretory system removes waste, toxin, and excess water or nutrient from the circulatory system-the body. It also regulates the amount of water and ions present in the body fluids. The main organ in excretory system is the Kidney.

<span style="color: black; display: block; font-family: Calibri; font-size: 12pt; text-align: left; text-indent: 36pt;"> The kidneys are a pair of vital organs that perform many functions to keep blood clean. The kidneys are bean shaped organs. Kidneys are 10cm long and 5cm wide. A person’s kidneys process about 200 quarts of blood to sift out about 2 quarts of waste products and extra water every day. Blood transported to 1.2 million filtering units called “Nephrons”.

<span style="color: black; display: block; font-family: Calibri; font-size: 12pt; text-align: left; text-indent: 36pt;"> The nephrone is the functional unit of the kidney, responsible for the actual purification of the blood. About one million nephrons are in the homeostatic mechanism of your body. The nephrone is a filtration system located in our body. This is where glucose eventually absorbed in your body.

<span style="color: black; display: block; font-family: Calibri; font-size: 12pt; text-align: left; text-indent: 36pt;"> A pair of tubes called ureters carry urine from the kidneys to the urinary bladder when the urine be full it can pain. The bladder empties urine. Urine is constantly passed from the kidneys to the bladder. When the bladder is “full”, nerve signals will be send to the brain. Antidiuretic hormone (ADH) controls the volume of urine eliminates the body, which is released by the pituitary gland.

<span style="color: black; display: block; font-family: Calibri; font-size: 12pt; text-align: left; text-indent: 36pt;"> Our body not only disposes undigested food in the form of faces and urine. Our skin disposes excess water and cells in our body in the form of sweat. Have you ever eaten kidney beans? They are called kidney beans, because after your kidneys which are a similar shape and color. Kidneys have 3 main parts, it’s the outer layer called “The Cortex”, the inner regions known as “The Medulla” and the chamber at the center is called “The Pelvis.

<span style="color: black; display: block; font-family: Calibri; font-size: 12pt; text-align: left; text-indent: 36pt;"> When a cells in our body break down the proteins, they produce wastes such as Urea. Sweat comes out from sweat gland. When we sweat, we lose half of litter every day. We lose 1 litter of water by breathing and sweating. That’s why; we need to drink 3 litters of water every day. I guess I need to drink more, because I don’t think that I’m drinking 3 litters of water every day…

<span style="color: black; font-family: 'ＭＳ 明朝'; font-size: 12pt;">★ Mutsuki <span style="color: black; font-family: 'ＭＳ 明朝'; font-size: 12pt;">★