Bones

Wednesday, March 13, 2013

There are 206 bones in the human body, and the skeleton comprises 20 percent of a persons total body weight. Want to learn more about bones? Dr. Edward Hill is here to help in todays 60 Second Housecall.

Dr. Hill:

From our head to our toes, bones provide support for our bodies and help form our shape.

The skull protects the brain and forms the shape of our face. The spinal cord, a pathway for messages between the brain and the body, is protected by the backbone, or spinal column.

The ribs form a cage that shelters the heart, lungs, liver and spleen, and the pelvis helps protect the bladder, intestines and in women, the reproductive organs.

Although theyre very light, bones are strong enough to support our entire weight.

The human skeleton has 206 bones. When the skeleton first forms, it is made of flexible cartilage, but within a few weeks it begins the process of ossification. Ossification is when the cartilage is replaced by hard deposits of calcium phosphate and stretchy collagen, the two main components of bone. It takes about 20 years for this process to be completed.

Bone-building continues throughout life, as a body constantly renews and reshapes the bones living tissue.

For North Mississippi Medical Center, Im Dr. Edward Hill.