Skeletal+System

**Skeletal System** The skeletal system is made up of bones, ligaments and tendons. It shapes the body and protects organs. The skeletal system works with the muscular system to help the body move. Marrow, which is soft, fatty tissue that produces red blood cells, many white blood cells, and other immune system cells, is found inside bones.




 * Body: Bones**


 * There are lots of bones inside my body.**
 * Bones help the body stand up.**
 * Bones are hard outside and soft inside.**
 * A joint is where two bones meet.**
 * Muscles help the bones move.**

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Inside our body is a skeleton. A skeleton is all the bones of the body joined to muscles, ligaments and tendons. A skeleton supports the body and protects the body organs inside: The **skull** bones protect the brain and give us the shape of our face. The spine, or backbone, protects the spinal cord, which is the message pathway between the brain and the body. The ribs form a cage to protect the heart, lungs, liver and spleen. The pelvis helps protect the bladder and intestines, and in women, the reproductive organs.

People have 206 bones. The tiniest bone is inside the ear. It is 3 millimetres long. It is called the stapes, or stirrup. The longest bone is in the leg. It is called the femur.

|| Go here to find the names of our bones

@http://www.public-action.com/SkyWriter/WacoMuseum/library/bones2.html

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The body part that has the most bones is the hand. We have 26 bones in each hand.

//This is an x ray of a hand.// An x ray is a photograph of inside the body.

Bones are hard on the outside, and though light, they are very strong. Inside they are soft. Red and white blood cells are made from the bone marrow inside bones. Bones also store minerals that the body needs. Bones are made of calcium, phosphorous, sodium and other minerals, as well as a protein called collagen. Bones need help from **muscles** and **joints**. Muscles pull the joints so we can move, and help our body's inside movements, such as digestion. Muscles are joined to bones by tough tissues called tendons.

A **joint** is where two bones meet. There are different kinds of joints: Some bend in only one direction, like a knee or elbow. They are called hinge joints. Some move in all directions, like a hip or shoulder. They are called ball and socket joints, and allow the greatest freedom of movement. Some turn from side to side, like a neck or wrist. They are called pivot joints.



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**The Skeletal System**

**The Skeleton is the name given to the collection of bones that holds the rest of our body up. Our skeleton is very important to us. It does three major jobs.**

**1.It protects our vital organs such as the brain, the heart and the lungs.**

**2.It gives us the shape that we have. Without our skeleton, we would just** **be a blob of blood and tissue on the floor.**

**3.It allows us to move. Because our muscles are attached to our bones,** **when our muscles move, they move the bones, and we move.**

**When you were born, your skeleton had around 350 bones. By the time you become an adult, you will only have around 206 bones. This is because, as you grow, some of the bones join together to form one bone.**


 * Our bones don't simply work on their own. The bones join together to form joints. The end of each bone is covered by a tough, smooth shiny substance called cartilage. The cartilage-coated bone-ends are kept apart by a thin film of slippery fluid that works like oil in a car. All of this is so your bones won't scratch and bump against each other when you move. Our bones are held together by strong stretchy bands called ligaments.**

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**Amazing Skeleton Facts**

The smallest bones in the body are found in the ear. The longest bone in the body is the femur. The bones are filled with a fatty substance called bone marrow. In this marrow, red and white blood cells are manufactured and then released into the bloodstream. Over half the body's bones are in the hands and feet. The only jointless bone in your body is the hyoid bone in your throat. As your bones grow, you get taller (of course). Your growth in height is likely to stop by the time you are 16 if you're a girl and 18 if you're a boy.

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**Essays to be posted below**

**This is my essay...By:Pat G.5**

Skeletal system The system that make us can stand The skeletal system is made up of bone, ligaments, and tendons. Its shapes the body and protects the organs. The skeletal system works with the muscular system to aid the body. The smallest bone is in our body is at the ear and it is called stirrup. Our longest bone in our body is at the leg and it is called the femur. Ligaments connect bones to bones and the tendon connects the muscle to the bone.

When a person moves one muscle, other muscles also move too, because it works in a pair. Sharks don’t have any bone. Teeth are the strongest bone in our body. There are three bones in each ear the hamer, the anvil, and the stirrup. Machines are alike of our body. In our body we have much kind of joints like hinge joint, pivot joint, cell joint, saddle joint, and the ball and socket joint.

Our back have vertebrate that protects our spinal cord that is connected to brain and the human body. There are joint that we can’t move at all, that is the cranium joints in our skull. A sparrow has more bone in its neck than a giraffe. The largest bone ever found was a 7 foot long, it was brachiosaur bone. Bird has about 360 bones. A baby has 5 separate bones in the skull.

A human skeleton starts out as cartilage that harder’s into bone over your entire lifetime. Bone is stronger, inch to inch that the steel in skyscrapers. Marrow which is soft, fatty tissue that produces red blood cells and white blood cell and other immune system cells, is found in side bone. Inside our bone is a skeleton. A skeleton are all bones of the body joined to muscles, ligament, and tendon. Skeletons support the body and protect the body and the organ inside.

The skull bone protects the brain and gives us the shape of our face. The spine or the back bone protects the spinal cord which is the message pathway between the brain and the body. The ribs from a cage to protect the heart, lungs, liver, and the spleen. The pelvis helps protect the bladder, intestine, and in woman they reproductive organs. People have 206 bones in the body. The smallest bone is 3 millimeters and it is called the stapes or the stirrup.

The skeletal system is very important like protecting, keeps the shape of our body, or even in woman they reproductive organs. If they are important we have to be careful not to break hit it or damage it, if it is damage some of the protection will be lose or some of them will not work properly.

Skeletal System>>Ink

Everyone have skeletal system!

What is skeletal system? Skeletal system is one of bones system. Skeleton system is made up of bones, ligaments, and tendons. It shapes the body and protects the organs. It works with the muscular system to help the body move. The skeletal system is divided into parts.

Bones in our body! Bones are made of calcium, phosphorous, sodium, protein (collagen), and other minerals. There are four types of bones; skull bones, spine or backbone, rips, and pelvis. Skull bones protect the brain and give the shape of your face. Spine or backbone protects the spinal cord which is the message pathway between the brain and the body. Ribs form a cage. They protect heart, lungs, liver, and spleen-produce cells involved immune responses. Pelvis protects the bladder and intestines, in the woman, the reproductive organs. Four types of bones have different work to protect.

Part related to bones! There are ligaments, tendons, marrow, and joints. Ligaments hold the bones together. Tendons keep the muscles joined to the bones. Marrow is inside the bones, produces red blood cells, white blood cells, and other immune system cells. Joint is where the bones meet. There are three types of joint; Hinge joints, Ball and Socket joints, and Pivot joints. Some of hinge joints bend in only one direction, like knee or elbow. Some of the ball and socket joints move in all directions, like hip or shoulder, they can move around. Some of the pivot joints from side to side, like neck or wrist. These are very important for bones.

How does skeletal system work? The skeletal system needs help from muscles and joints. Muscles are joined bones by tissues called tendons. Muscles pull the joints so you can move. Three major jobs of skeleton! The skeleton protects our vital organs such as the brain, the heart, and the lungs. It gives us the share, without our skeleton we would just be a blob of blood and tissue on the floor. It allows us to move because our muscles are attached to our bones.

More about bones! You have 206 bones in your body. When you are just born, you have about 350 bones and when you grow up, the bones will join together and form a bigger one. The most of their bones are in your hands and feet. The strongest bones are the teeth. The smallest bone is in your ears. There are three bones of each ear; the hammer, the anvil, and the stirrup. Human skeleton starts out as cartilage that hardens into bones over your entire lifetime. Bone is stronger than steel such as the skyscrapers. How about the animal! Sharks are big and scary but they don’t have any bones. A sparrow has more bones in its neck than a giraffe neck. Brachiosaur arm bones was a 7 foot long, this was the largest bone ever found. Birds have hollow bones which are light so they can fly. Snake has 400 vertebrates.

Skeleton system protects the organs and shapes our body. Bones are in skeletal system. Bones are made of calcium, phosphorous, sodium, and other minerals. There are four types of bones; skull bones, spine or backbone, rips, and pelvis. They have different jobs to do. Ligaments, tendons, bone marrow, and joints are related to bones. Marrow is inside the bones, produces red, white blood cells, etc. There are three types of joint; Hinge joints, Ball and Socket joints, and Pivot joints. Joints are in many parts of your body, such as shoulders, neck, etc. So, you know what skeletal system is, what do is do, what is related to them.

The Scientific Skeletal System



The skeletal system is made up of 3 substances; bones, tendons, and ligaments. This system shapes our body and protects organs. It also works with the muscular system to help the body move. The skeletal system is mainly about the bones in our body. This means we actually need our skeletal system to survive...

All bones we have, are made up of calcium, phosphorous, sodium, collagen, and other minerals. We all have bones in different parts of our body, and the skull is one. Our skull bone protects our brain, and gives us shape of our face. When people say all of our faces have different shapes, they mean our bones are shaped differently, and so do the muscles. The next type of bone is the spine, or backbone. Our spine protects the spinal cord, which is the message path way, between the brain and our body. Another type of bone is called “ribs”. This bone form a cage, and usually protects our heart, lungs, liver, and spleen. The last type of bone is the pelvis. It protects our bladder and intestines. In women, it also protects the reproductive organs.

There are also certain jobs or functions, in the skeletal system. The first job, is to protect our vital organs such as brain, the heart, and the lungs. The second job is to give us shape that we have. Without our skeletons, we would just be a big bag of meat, lying on the floor. The last job is to allow us to move. Our muscles are attached to bones, so when our muscles move, they move the bones, and move.

In our body, there are substances called “bone marrows”, which are the inner part of our bones. They are the soft, fatty tissues that fill the hollow parts of bones. This substance makes bones have a hard surface, and a soft inner part. The bone marrows produce red blood cells. They also produce white blood cells, and other immune system cells. Immune system cells, are cells which provide immunity, and they can be divided into 3 groups, but specific information are only necessary in the immune system, and not in this system. All blood cells in our body, are produced from bone marrows, and this is why bone marrows are so important.

There are 3 types of joints in our body; hinge joints, ball and socket socket joints, and pivot joints. Hinge joints, move the same way as in doors. They flap open, and close, open, close,... and repeat this step over and over again, but does this movement, only when we tell them to do. We mostly have these joints in our legs, and our arms. The ball and socket joint allows one part to rotate at almost any angle, with respect to another. We usually have these joints in our arms and hips. Our pivot joints turn from side to side. This type of joint is found in our neck, and wrists.

In our body, there are 2 types of connections; ligaments and tendons. Ligaments are stretchy bands that hold the bones together. We have these connections so our bones don't fall apart. Tendons keep muscles joined to the bones. This connection allows our body to move, by letting muscles and bones work together.

All human beings have bones. No matter where they come from, if they are Americans or Chinese, we all have joints and muscles. Bones have a very important function in this system, and even in our body! Bones protect most organs in our body, so we don't have trouble doing anything we want to do. Bones keep our body guards.

<span style="display: block; font-family: Calibri,sans-serif; text-align: left;">Written by Mizuki G5 <span style="display: block; font-family: Calibri; font-size: 12.5pt; line-height: 115%; margin: 0in 0in 10pt; text-align: center;">THE SKELETAL SYSTEM <span style="display: block; font-family: Calibri; font-size: 12.5pt; line-height: 115%; margin: 0in 0in 10pt; text-align: center;">The boney part of your body The skeletal system is made up of bones, ligaments and tendons. The skeletal system shapes the body and protects the organs. The skeletal system works with the muscular system to help us move. Bones help us stand, jump, walk etc. Ligaments connect bones to bones and the tendon connects the muscle to the bone. <span style="color: black; display: block; font-family: Calibri; font-size: 12.5pt; line-height: 115%; margin: 0in 0in 10pt; text-align: justify;">Joints are where bones meet. There are 3 types of joints in our body. The three types of joints are the hinge joints, ball and socket joints and the pivot joints. The hinge joint moves only in one direction like the knee. The ball and socket joint can move in all directions like the hip. The pivot joint can move side to side like the neck. <span style="color: black; display: block; font-family: Calibri; font-size: 12.5pt; line-height: 115%; margin: 0in 0in 10pt; text-align: justify;">Our bones are made up of calcium, phosphorus, sodium and other minerals as well as a protein called “collagen”. There are 4 main bones that protect our most important organs. The 4 main bones are the skull bone, spine or backbone, ribs and pelvis. If we didn’t have these bones our important organs will be destroyed and we will die. <span style="color: black; display: block; font-family: Calibri; font-size: 12.5pt; line-height: 115%; margin: 0in 0in 10pt; text-align: justify;">Our skull is like a crash helmet, it protects our brain. If we didn’t have a skull and we just bumped into something our brain could get damaged really easily. Our spine or backbone protects our spinal cord from getting damaged because if our spinal cord gets damaged we our lower body can’t send messages to the brain. Our ribs protect our heart and lungs. If we didn’t have ribs and we get hit on our heart or lung we wouldn’t be able to breathe and we would die. Our pelvis protects our bladder. If we didn’t have a pelvis when we sit we would pee all over. <span style="color: black; display: block; font-family: Calibri; font-size: 12.5pt; line-height: 115%; margin: 0in 0in 10pt; text-align: justify;">There are 27 bones in each hand. Each finger contains 3 bones and each thumb contains 2. If you are a baby you have around 300 bones. When you are an adult you have 206 bones. This is because when you grow up your bones joined together to be 1. <span style="color: black; display: block; font-family: Calibri; font-size: 12.5pt; line-height: 115%; margin: 0in 0in 10pt; text-align: justify;">The shortest fully grown man is about 57cm [ 22 and a half inches ] tall. The largest record of human femur was about 76cm [ 29.9in ] long. Sharks have no bones. Your patella is like your knee cap. There are three bones in your ear, which are the hamer, the anvil and the stirrup. The smallest bone in your body which is located in your ear is the stirrup. The stirrup is only 0.12in long. <span style="display: block; font-family: Calibri; font-size: 12.5pt; line-height: 115%; margin: 0in 0in 10pt; text-align: justify;">this is my essay kareena <span style="color: black; display: block; font-family: Calibri; font-size: 12pt; line-height: 115%; margin: 0in 0in 10pt; text-align: justify; text-indent: 144pt;"><An Amazing Bones> <span style="color: black; display: block; font-family: Calibri; font-size: 12pt; line-height: 115%; margin: 0in 0in 10pt; text-align: justify; text-indent: 144pt;">The Skeletal System

<span style="color: black; display: block; font-family: Calibri; font-size: 12pt; line-height: 115%; margin: 0in 0in 10pt; text-align: justify; text-indent: 36pt;">The skeletal system is made up with tendons, bones, and ligaments. Ligaments are fibrous tissues that join the bones together. It also provides them with stability. Tendon is a strong band or cord of tissue attaching a muscle to a bone. Skull bone is very important, because it protects our brain. Skull bones are located in our head. The spinal cord is connected to the skull bone. It gives shape to our face.

<span style="color: black; display: block; font-family: Calibri; font-size: 12pt; line-height: 115%; margin: 0in 0in 10pt; text-align: justify; text-indent: 36pt;">Marrow is soft or fatty tissue that produces red blood cells, white blood cells and other immune system cells, it’s found inside our bones. Cartilage is like a cushion between bones, so the bones would not crush. Joints are place where two bones meet. Without joints, the skeleton would be rigid, and we will not be able to move. It helps us to move in different ways.

<span style="color: black; display: block; font-family: Calibri; font-size: 12pt; line-height: 115%; margin: 0in 0in 10pt; text-align: justify; text-indent: 36pt;">There are 3 types of joints. They are pivot joint, hinge joint, and ball and socket joint. Pivot joint is an anatomical articulation that consists of a bony pivot in a ling of bone and ligaments. Hinge joint is a joint between that permits motion in only one paize. Ball and socket joint is an articulation in which the rounded head of one bone fie into a cup like cavity of the other and admits movement in any direction called earthrises.

<span style="color: black; display: block; font-family: Calibri; font-size: 12pt; line-height: 115%; margin: 0in 0in 10pt; text-align: justify; text-indent: 36pt;">The bones are very important for our body. It helps us stand, or move. It also gives us body shape and protects organs. Bones are made up with calcium, sodium, phosphorus, and collage as well. The skeletal system works together with the muscular system. The largest bone inside our body is the thighbone known as femur, which is about 50cm long in a man. The smallest bone is found in our ears.

<span style="color: black; display: block; font-family: Calibri; font-size: 12pt; line-height: 115%; margin: 0in 0in 10pt; text-align: justify; text-indent: 36pt;">There are 3 different types of bones. They are Ribs, Pelvis, and Spine known as Backbone. Ribs form a cage and protect heart, lungs, intestine, liver and spleen. Pelvis protects bladder and intestine. If we do not have pelvis, when we sit, the bladder would rupture and our pee will come out and wet our pants! That’s why, we need to thank pelvis a lot! Spine protects spinal cord. Lastly, if you think the bones are lifeless, you are wrong, so use your body nicely!

<span style="color: black; display: block; font-family: Calibri; font-size: 12pt; line-height: 115%; margin: 0in 0in 10pt; text-align: justify;">Mutsuki G5

The Skeletal System-Yoshita

<span style="display: block; font-family: 'Times New Roman'; font-size: 12.5pt; margin: 0cm 0cm 0pt; text-align: justify;">The Skeletal system is made up of bones, ligaments and tendons. The Skeletal system shapes the body and protects the organs. The Skeletal system works with the muscular system to help us move. The bones help us stand, jump, walk etc. The ligaments connect bones to bones and the tendons connect the muscle to the bone.

There are 3 types of joints in our body; hinge joints, ball and socket joints, and pivot joints. Hinge joints move the same way as in doors. They flap open and close, open, close, and repeat this step over and over again, but do this movement, only when we tell them to do. We mostly have these joints in our legs, and our arms. The ball and socket joint allows one part to rotate at almost any angle, with respect to another. We usually have these joints in our arms and hips. Our pivot joints turn from side to side. This type of joint is found in our neck, and wrists.

All human beings have bones. No matter where they come from, if they are Americans or Chinese, we all have joints and muscles. Bones have a very important function in this system, and even in our body! Bones protect most organs in our body, so we don't have trouble doing anything we want to do. Bones keep our body guards.

In our body, there are 2 types of connections which are ligaments and tendons. Ligaments are stretchy bands that hold the bones together. We have these connections so our bones don't fall apart. Tendons keep muscles joined to the bones. This connection allows our body to move, by letting muscles and bones work together.

There are also certain jobs or functions, in the skeletal system. The first job, is to protect our vital organs such as brain, the heart, and the lungs. The second job is to give us shape that we have. Without our skeletons, we would just be a big bag of meat, lying on the floor. The last job is to allow us to move. Our muscles are attached to bones, so when our muscles move, they move the bones, and move. <span style="color: black; display: block; font-family: Calibri; font-size: 12.5pt; margin: 0cm 0cm 0pt; text-align: justify;">Sharks have no bones. Your patella is like your knee cap. There are three bones in your ear, which are the hammer, the anvil and the stirrup. The smallest bone in your body which is located in your ear is the stirrup. The stirrup is only 0.12in long. <span style="color: black; display: block; font-family: Calibri; font-size: 12.5pt; margin: 0cm 0cm 0pt; text-align: justify;">There are 27 bones in each hand. Each finger contains 3 bones and each thumb contains 2 bones. Our skull is like a crash helmet, it protects our brain. If we didn’t have a pelvis when we sit we would pee all over. If we didn’t have ribs and we get hit on our heart or lung we wouldn’t be able to breathe and we would die. If we didn’t have these bones our important organs will be destroyed and we will die. There are 4 main bones that protect our most important organs. There are 3 types of joints in our body. The ball and socket joint can move in all directions like the hip. The pivot joint can move side to side like the neck. <span style="color: black; display: block; font-family: Calibri; font-size: 12.5pt; margin: 0cm 0cm 0pt; text-align: justify;">Our bones are made up of calcium, phosphorus, sodium and other minerals as well as a protein called “collagen”. There are 4 main bones that protect our most important organs. The smallest bone in your body which is located in your ear is the stirrup. The stirrup is only 0.12in long. <span style="display: block; font-family: Calibri; font-size: 17px; line-height: 24px; margin: 0in 0in 10pt; text-align: justify;">THIS IS MY ESSAY BR NATCHA....... <span style="display: block; font-family: Calibri; font-size: 12pt; line-height: 115%; margin: 0in 0in 10pt; text-align: center;">SKELETAL SYSTEM-NATCHA <span style="display: block; font-family: Calibri; font-size: 12pt; line-height: 115%; margin: 0in 0in 10pt; text-align: center;">MY BONES ARE JUST LIKE SKELETAL SYSTEM!!!!

<span style="color: #0d0d0d; display: block; font-family: Calibri; font-size: 12pt; line-height: 115%; margin: 0in 0in 10pt; text-align: justify; text-indent: 1cm;">As you know there are 206 bones in our body. Inside our body, there is a skeleton. A skeleton is all the bones of the body joined to muscles ligaments and tendons. Bones ligaments and tendons are three helpers of skeletal system. Without these three, we would be just a bag of blood. Skeletal muscles shape our body and protect the body organs. Skeletal system also allows us to move.

<span style="display: block; font-family: Calibri; font-size: 17px; line-height: 24px; margin: 0in 0in 10pt; text-align: justify; text-indent: 1cm;"> The most important part of skeletal system is bones. Bones are made up of calcium, phosphorus, sodium as well as proteins called collagen and other minerals. There are four different types of bones in our body, which are-l <span style="color: black; font-family: Verdana,sans-serif; font-size: 9pt; line-height: 115%;">ong bones, short bones, flat bones and irregular bones. Skull, spine which I s also known as backbone, ribs and pelvis these are main bones in our body.

<span style="color: black; display: block; font-family: Calibri; font-size: 12pt; line-height: 115%; margin: 0in 0in 10pt; text-align: justify; text-indent: 1cm;">A skull bone protects the brain and gives us the shape of our face. Spine or backbone protects the spinal cord which is the massage pathway between the brain and the body. Ribs form a cage, protects the heart, liver and spleen. It also produces cells. Pelvis protects our intestine and bladder. It also protects women reproduction organs.

<span style="color: black; display: block; font-family: Calibri; font-size: 12pt; line-height: 115%; margin: 0in 0in 10pt; text-align: justify; text-indent: 1cm;">Ligaments and tendons help the body to move. Ligaments joints bone to bone. Tendons joints muscles to bone. Marrow makes up the inside portion of our bones, it’s a soft fatty tissue that produces cells, such as red blood cells and white blood cells and other immune system.

<span style="display: block; font-family: Calibri; font-size: 12pt; line-height: 115%; margin: 0in 0in 10pt; text-align: justify; text-indent: 1cm;">There are three major jobs of skeletal system. The first one is, it protects our organs such as the brain, the heart and the lungs. The second one is, it gives us the shape that we have. Without skeletal, we would just be a blob of blood and tissue on the floor. The most important is that it helps us to move. We can move by dancing, standing and all, just joking our muscles are attached to our bones when our muscles move, they move the bones and we move.

<span style="display: block; font-family: Calibri; font-size: 12pt; line-height: 115%; margin: 0in 0in 10pt; text-align: justify; text-indent: 1cm;">Bones also need help from joints to move. A joint is where two bones meet. There are different kinds of joints. Some bend in only one direction, like a knee or elbow. They are called hinge joints. Some move in all direction, like hip or shoulder. They are called ball and socket joints, and allow the greatest freedom of movement. Some turn from side to side, like a neck or wrist. They are called pivot joints.

<span style="display: block; font-family: Calibri; font-size: 17px; line-height: 24px; margin: 0in 0in 10pt; text-align: justify; text-indent: 1cm;"> Inside our body, there is a skeleton. A skeleton is all the bones of the body joined to muscles ligaments and tendons. Bones ligaments and tendons are three helpers of skeletal system. It protects our organs such as the brain, the heart and the lungs. The second one is, it gives us the shape that we have. Without skeletal, we would just be a blob of blood and tissue on the floor. The most important is that it helps us to move. Bones are made up of calcium, phosphorus, sodium as well as proteins called collagen and other minerals. There are four different types of bones in our body, which are-l <span style="color: black; font-family: Verdana,sans-serif; font-size: 9pt; line-height: 115%;">ong bones, short bones, flat bones and irregular bones. Skull, spine which I s also known as backbone, ribs and pelvis these are main bones in our body. A skull bone protects the brain and gives us the shape of our face. Spine or backbone protects the spinal cord which is the massage pathway between the brain and the body. Ribs form a cage, protects the heart, liver and spleen. It also produces cells. Pelvis protects our intestine and bladder. It also protects women reproduction organs. Ligaments and tendons help the body to move. Marrow makes up the inside portion of our bones. A joint is where two bones meet. You know all about skeletal system!!!

Skeleton System- Radhika

The system of hard bones. The skeleton system are made of bones, ligaments, and tendons. It shapes the body and protects organs. It works with the muscle system to help the body. Bones are stronger than steel and aluminum air craft.they are made up of calcium, sodium and other minerals, as well as a protein called “collagen”. So, bones are not only made up of calcium.

Skull bones protect our brain. It also gives shape to our face. Backbone is the spinal cord. Which is a message path way between the brain and the body. Ribs protect our heart and lungs and the pelvis protects our bladder. Skull bones are in our head, so the bone in our head is called the skull, which is properly known as the cranium. Ribs form a cage. Ribs protect heart, lungs, liver, and spleen produce cell involved immune responses. As I told you pelvis protect the bladder and intestine and in women, reproductive organs. Ribs are placed around our lungs and heart.

Ligaments are stretchy bands and hold the bones together. Most commonly, it refers to fibrous tissue that connects __bones__ to other __bones__ and also known as articular ligament, articular larva, fibrous ligament, or true ligaments. Don't get confused with ligaments and tendons you will see why. Tendons, or sinews, connect __muscles__ to bones. Bones allow a person to walk, run, jump, roll, lift, carry, drop, and do other important physical activities. It is very important to do physical activities so you can stay fit and healthy.

__Bone__ __Marrow__ is the flexible tissue found in the interior of bones. In humans, marrow in large bones produces new blood cells. It constitutes 4% of the total body mass of humans. As I told you bone marrow are really flexible.

How does the skeletal system work? It needs help from muscles and joints. Muscles are joined to bones by tissues called tendons. Muscles pull the joints so we can move. Skeleton system also needs help from the muscle system.

__Joints__ are where two bones meet. There are 3 types of joints. Hinge, Ball and Socket, and the Pivot joints. Some hinge joints move in one direction such as knee and elbow. Ball and Socket joints move in all direction such as hip and shoulders. It allos the greatest freedom of movement.some pivot joints turn side to side like neck or wrist.

The 3 major jobs of the skeleton are it protects our vitual organs such as the brain, the heart and lungs. It give us shape that we have. Without our skeleton, we would just be a blob of blood and tissue on the floor. It allows us to move, they move bones, when our muscle move, they move bones, when then we move.

Did you know a babyhaas 350 bones and adults have 206 because they join together and from one. Cartilage is at the end of each bone, they are smooth and shiny. They are kept apart by a thin film of slippery fluid that works like a oil. So your bones won't scratch and bump against each other when you move. Stapes, or stirrup are the smallest bones that are in your ears. Legs have longest bone called the “femur”. There around 26 bones in each hand. There is a fatty subtance called “marrow”. Jointless bones are hyoid bone.

<span style="font-family: 'Calibri','sans-serif'; font-size: 12pt;">Walter G5  <span style="font-family: 'Calibri','sans-serif'; font-size: 12pt;"> <span style="font-family: 'Calibri','sans-serif'; font-size: 12pt;">Fabulous Skeletal System <span style="font-family: 'Calibri','sans-serif'; font-size: 12pt;"> <span style="font-family: 'Calibri','sans-serif'; font-size: 12pt;">What would happen if there was no skeletal system in our body? <span style="font-family: 'Calibri','sans-serif'; font-size: 12pt;"> <span style="font-family: 'Calibri','sans-serif'; font-size: 12pt;">Skeletal system is a system which with the muscular system. There are 206 bones in our body. In babies there are 360 bones, because some bones didn’t combine together like baby skull. Ribs are the most important bones, because it protects the heart and lungs. Skull is also important, because it protects the brain. <span style="font-family: 'Calibri','sans-serif'; font-size: 12pt;"> <span style="font-family: 'Calibri','sans-serif'; font-size: 12pt;">Skull is a bone that makes up our face. Skull protects our brain. Skull is important, because when our skull don’t protect the brain and you bump somewhere your brain can get damage and your body won’t be able to move. About 5 bones are in our skull. Babies never have a perfect skull, because when they are a baby all the bones didn’t combine so they will have a perfect skull soon. <span style="font-family: 'Calibri','sans-serif'; font-size: 12pt;"> <span style="font-family: 'Calibri','sans-serif'; font-size: 12pt;">Pivot joints are joints that help our neck move. They are in our neck. They make our neck move so when we turn our neck it doesn’t hurt. They are important, because they help our neck move. If they weren’t in our body we would not be able to move or turn our neck. <span style="font-family: 'Calibri','sans-serif'; font-size: 12pt;"> <span style="font-family: 'Calibri','sans-serif'; font-size: 12pt;">Hinge joints are in our elbow and our knee. Hinge joints help our elbow and our knee to move back and forward. They are important, because they let our elbow and knee move. Knees help us walk and elbows help us picking up. If there were no hinge joints in our body we will walk like a penguin and our elbow will be straight. <span style="font-family: 'Calibri','sans-serif'; font-size: 12pt;"> <span style="font-family: 'Calibri','sans-serif'; font-size: 12pt;">Ball and Socket joints are in our hips and our shoulders. Ball and Socket joints help our hips and our shoulders by letting them twist. Hips help us sit down and shoulders help us swing our arm. If there were no ball and socket joints in our body we couldn’t move our hips and our shoulders. Our hips will be like the duck’s butt and our shoulders will be like the robot’s shoulder. <span style="font-family: 'Calibri','sans-serif'; font-size: 12pt;"> <span style="font-family: 'Calibri','sans-serif'; font-size: 12pt;">Vertebrae are our backbones or spine. They are in our back. Vertebrae protect our nerves by letting them in the vertebrae. They are important, because they protect the nerves from the brain to the body. Nerves are connected to the brain so when the brain send message to our body it goes through the nerves. So if the vertebrae broke, half of your body won’t be able to move. <span style="font-family: 'Calibri','sans-serif'; font-size: 12pt;"> <span style="font-family: 'Calibri','sans-serif'; font-size: 12pt;">Skeletal system is important, because they let our bones move, so our body can move. Tendons are muscles that connect muscles to bones. Ligaments are muscles that connect bones to bones. Skeletal system does not only help our body move they also help protect important things in our body. If there were no skeletal system in our body we will just be a bag of meat lying down on the floor. <span style="font-family: 'Calibri','sans-serif'; font-size: 12pt;"> <span style="font-family: 'Calibri','sans-serif'; font-size: 12pt;">Actually muscular system support skeletal system and skeletal system support muscular system, so it is like brothers. Tendons and ligaments are muscular system and they help skeletal system. Ribs are skeletal system and they protect the heart. It means these 2 systems protect our body by like teamwork. So don’t think skeletal system is not important.