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Bones Of A Human Body
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The bones of a human body are considered to be our skeletal system. This system is fascinating once you start learning about it. The body is an amazing thing. Learning about the body is a great way to help others as well as being incredibly important knowledge when it comes to your own health. The body is made of many different systems and the skeletal system is just one of those. So when learning about anatomy and physiology, there is a lot to absorb.

What Are Bones?

The bones of a human body are actually living cells. Many people think of skeletons they see at Halloween time when they think of the skeletal system. But bones are so much more than that. Bones themselves contain different layers. The outer layer being the periosteum which consists of blood vessels and nerves. The next layer is the compact bone which is the part that most people think of when they think about bones. It is the smooth, hard surface. Then, inside of that layer is the cancellous layer which looks like a sponge. It helps give the bone strength but also allows the bones to be somewhat light weight. The inner layer is the bone marrow which is more of a jelly-like substance and it's job is to make red and white blood cells to help carry oxygen and fight off infections.

What is the Importance of Bones?

The bones of a human body are extremely important. Not only do they give our body structure but they produce the red blood cells to help carry oxygen through our body and white blood cells to help fight infections. They also help us move. Attached to the bones are tendons and muscles. The entire system put together is called the musculoskeletal system which allows us the support as well as the ability to move. The joints are the areas where bones come together and allow movement of our body by bending and turning.

How Many Bones?

There are approximately 206 bones in an adult human body. There are actually more in a baby, around 300 when they are born. They actually begin to fuse together as you get older which is how an adult has fewer bones than a baby. Some areas of the body have more bones than others. In fact, one hand alone has 27 bones and the human face contains 14! So the bones of a human body are fascinating things.

There is really much more to learn and those who are in high school and college anatomy and physiology classes as well as others studying in various ways are going to learn a great deal more about the bones of a human body. Learning more about the skeletal system as well as the rest of the body is exciting and interesting!


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