The skeletal system is …show more content…
Protection: An important function of the skeletal system is the protection of vital internal organs. The skull protects the brain just as the rib cage protects the heart, lungs, and abdominal organs. Being encased and protected allowed these organs to develop and to increase in size and performance. Without protection from bones, a simple bump to the head or abdomen could be a fatal injury.
Movement: In combination with the muscular system, the skeletal system provides for bodily motion. Skeletal muscles are attached to bones by tendons. The tendons act as a lever to move bones. All bones are pulled by muscles, not pushed, so each moveable bone must be strong enough to withstand the pulling force exerted upon it.
Mineral and Energy Storage: The outer layers of bony tissues are used for the storage of minerals, primarily calcium and phosphorus. Deposits and withdrawals of mineral ions from bone are continuous, which helps to maintain blood levels of calcium and phosphorus. Yellow marrow, found in the shaft of long bones and other mature bones, consists mostly of fat and serves as an energy