NETA Personal Trainer Practice Exam

Which of the following is NOT one of the major functions of the skeletal system?

1. Movement

2. Coordination

3. Protection

4. Blood cell formation

The correct answer is: Coordination

The major functions of the skeletal system include movement, protection, and blood cell formation. Movement is facilitated by the skeletal system in conjunction with the muscular system, allowing the body to perform various physical activities. Protection is another critical function, as bones shield vital organs; for example, the ribcage protects the heart and lungs. Blood cell formation occurs in the bone marrow, where red and white blood cells are produced, making it a crucial component of the body’s hematopoietic system. Coordination, while important for overall body function and movement, is primarily a role of the nervous system rather than the skeletal system. The skeletal system acts as a framework that supports the body and enables movement but does not directly coordinate motion. Therefore, stating that coordination is a major function of the skeletal system would not accurately represent the system's specific roles.