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Bones - Get To Know A Part Of Your Body You (Hopefully) Never See

By Edited May 11, 2016 0 0

Bones make up your body structure. Just cause bones don’t move or breathe doesn’t mean that they are not alive. They are still growing just like everything else. Almost all your bones are made up of the same thing.

 The outer surface bones is the periosteal. This is a thin membrane that has nerves and blood vessels to help the bone. The next layer is called the compact layer. It’s the layer you see when you see a skeleton.

 The next layer is called the cancellous layer. It is spongy but very strong.

 The last layer, which is not strong, is the bone marrow. The bone marrow is like jelly and is supposed to make blood cells.

 When you were a baby, you had small hands, small feet, but a lot of bones. Adults have 206 bones, but when they’re babies, they had 300! When you grow up, you bones start to fuse together with other bones.

 Some bones in a baby are made up of only a material called cartilage. Cartilage is a soft and flexible. While you grow, the cartilage grows and gets replaces with bone from the help of calcium. Around when you are 25, that process is done and your bones with be at their peak.


 All the bones in your body will grow to be very strong and very light. One of the important ones is the spine. It keeps you up right and lets you turn around. It also protects the spinal cord. The spinal cord is a nerve that send messages from you brain to your body. The spine is unique because it is made of 26 bones. These 26 bones are called vertebrae.

 There are different types of vertebrae. The top seven vertebrae are called the cervical. The cervical is connected to the back of your neck. The cervical vertebra is used to help support your neck and head. Below is the thoracic.

 The thoracic hold your ribs in place. Below the thoracic is the lumbar. Below the lumbar is the sacrum. There are 5 sacrum vertebrae and all of them are fused together to make one bone. And below that is the coccyx.

 The coccyx has also been fused to make one bone. The thoracic, lumbar, sacrum and coccyx are all used to help you carry heavy objects. Between each vertebrae is a disc of cartilage. This cartilage stops your vertebrae from rubbing against each other. 


The liver, lungs and heart are all very important parts of your body. So to protect them from damage, you have ribs. It is pretty easy to find the bottom of your ribs through your skin. All you have to do is take your finger, start at your heart, and slowly slide your finger down your body until you get to the bottom. You’ll be able to feel your bones curve, which means, you got to the end of your ribs. Your ribs have 2 sides. The left and the right. Your left is exactly the same as you right and visa versa. There are 12 pairs of ribs. Some people are born with 1 or 2 extra ribs; some are born without 1 or 2 extra ribs. The last 2 pairs of ribs are called the floating ribs because they are not attached to your sternum. But luckily, they are still attached to your spine.

 The most important bone of all of them is the skull. The skull protects your brain, which makes you do everything. Your skull is made up of more than just 1 bone. Some of the bones protect your eyes and some of the bones protect your brain. If you feel just below your eye, then you will feel the ridge of your eye socket.

 The smallest bone in your body is on your head. It is the stirrup bone behind you eardrum. It is only .1 to .13 inches long. The jawbone is the only bone in your body that can move. It can let you talk can eat.


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Everything you do, you use your hands in some kind of way. Both of your arms are attached to a bone in your back called the shoulder blade. The shoulder blade is a big triangular bone located on the upper side of the left and the right ribs. The arm is made up of 3 bones. The humerus which is above the elbow, then the radius and ulna are the bone below your elbow. Each of the bones on the arm is wider on the end but thinner in the middle. The reason for that is because it is wider where it needs its strength, near other bones.

 At the end of your ulna, there are 8 small bones that make your wrist. Your wrist is what lets your hand move around. The palm of your hand is made of 5 separate bones. Each of your fingers is made of 3 bones except your thumb, which only has 2. The thumb is actually not a finger because it only has 2 joints. If you look at your fingers, you notice 2 lines on your finger. But if you look at the thumb, it only has 1 line. Your hand, wrist and fingers, all combined, make 54 bones just in your wrist and below.


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 Your legs have to be really strong to support the wait of your body. So that is exactly what your leg bones are. Big and strong. The longest bone in your body is the bone that goes from your pelvis to your knee. That bone is called the femur. The knee is a joint. Joints are bones the let you bend your arms and legs. To protect the knee from getting damaged, there is a bone above it called the knee cap. Below your knee are 2 bones, the tibia and fibula. Just like the bones in the arm, they are wider at the end at thinner in the middle to give the legs strength. The foot is a lot like your hand, each toe is made up 3 bones except your big toe, which is made up of 2. All the bones in your foot come up to a total of 52 bones. There are only 2 things that people use their feet for: walking and standing.  Your feet are flat so that it is easy to balance.

All Those Bones Make Up Your Skeleton
 Joints are what let your bones move. Fixed joints are joints that do not move. Your head has fixed joints. They are meant to close up the space in a kid’s head. Moving joints are the joints that let you walk run and grab things. Some moving joints only move a little bit like you’re spine. Other joints move a lot. They are called hinge joints. Your knees and elbows are hinge joints. Your knees let you bend your legs to walk. Your elbows let you bend your arms to grab something. Think of your arms and legs as doors. You can only bend them one way like doors. There are also hinge joints in your fingers and toes. Another type of joint is the ball and socket joint. It is made by a ball like end of one bone and a socket like end of another bone. It is made to have a lot of movement in every direction. The ball and socket joints are used around your shoulders and hips. When you are swimming you can move your arms in every direction. That is the work of the ball and socket joint. When people put oil on hinges to stop them from squeaking, you hinge joints have a special kind of liquid called synovial fluid. This liquid helps your hinge joints move freely.

 Bones are held together by ligaments. Ligaments are like really strong rubber bands. Remember to try not to break your bones. To protect your head wear a helmet when you do ride your bike or scooter. You could always crash or something like that. When you play sports, make sure to wear shin guards in soccer or batting helmet in baseball. Try to strengthen your bones by being active but still make sure to be careful not to break your bones. 



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