What Is the Major Function of the Skeletal System?

The 206 bones of the human body have many purposes, including giving the body its shape and allowing it to move. Most bones have a hard, protective exterior and a soft, spongy interior that gives them flexibility. Animals with spinal columns are called vertebrates.

Movement

Muscles connected to bones allow the body to move, which is why it is commonly referred to as the musculo-skeletal system.

Protection

The bones protect vital organs. The ribs protect the heart and lungs, while the skull shields the brain.

Marrow

Red blood cells are produced by the marrow in some bones. With age, some of this marrow begins storing fat, becoming an important energy reserve.

Calcium

Bones store excess calcium and phosphorous, releasing these minerals into the blood stream when the body's supplies get low. Having enough calcium prevents osteoporosis, a condition that makes bones thinner and more fragile.

Appendages

Appendicular bones like the femur, humerus, pelvis and clavicle keep arms and legs attached to the body.

Aging

Bones harden as people age. Supple bones allow babies to fall without getting hurt, but make it easier for bones to break, fracture or shatter in later years.

References

• Minnesota State University Mankato

Resources

• IvyRose Holistic