The chest, also known as the thorax, is a very significant part of the human body. In this chest region, organs essential to survival, such as the lungs, heart, and arteries, are located. The human body has created a strong system of defense to protect the chest region The human skeleton bones are one of the top defenses of the body.

            Many people know what the skeletal system bones look like. However, not many people know the structure of these bones. Bones are made up a type of dense connective tissue, formed from deposits of calcium phosphate. The bones are formed from calcium phosphate and a type of dense connective tissue. Every bone in the body has a slightly different shape and size, which is controlled by the genetic code. The skeletal bones are very important in aiding the body with movement and strength.

             Although the bones play essential roles in protection, another vital function of the bones are creation of white and red blood cells. In the middle region of many bones exists the bone marrow. In this region, red blood cells and white blood cells are produced. The red blood cells are very important because they transport O2, also known as oxygen, to all regions of the body. The white blood cells are also very important for bodily function because these cells play a role in defending the body from pathogens.

             Twenty five skeletal bones are found in the chest region. The thorax contains twenty four ribs out of the total twenty five bones in the chest. A relatively long bone known as the sternum is also found in the thorax. All 25 of these bones play vital roles in protecting the organs of the chest, such as the lungs and heart.   The twenty four ribs are curvy bones that form a cage across the chest. These bones protect the heart and lungs and also expand to allow for breathing. While the ribs form a cage around the vital organs, the sternum is found in the middle of chest.

            Without these chest bones, human existence would be greatly compromised. It would be very easy to damage organs such as the heart or lungs. Since evolution drives organisms to survive, humans have evolved to develop these thorax bones to protect the lungs and heart. The chest bones account for a total of 25 bones out of the 206 bones in the human skeleton.

         To learn more about chest bone anatomy, head on over to LearnBones.com. Learn Bones is the premier resource on the bones of the human skeleton. There you will find detailed descriptions, diagrams, and images.