Which of the following is NOT a function of the skeletal system? Select one:
A. Blood cell formation
B. Storage of potassium
C. Generation of ATP
D. Facilitation of movement
The correct answer and explanation is:
The correct answer is C. Generation of ATP.
Explanation:
The skeletal system plays several crucial roles in maintaining the body’s structure and function, but it is not responsible for the generation of ATP. ATP, or adenosine triphosphate, is primarily generated in cells through cellular respiration, particularly in the mitochondria. While muscles (which are attached to bones) rely on ATP for contraction, the skeletal system itself does not generate ATP.
Here is how the other options relate to the skeletal system:
- A. Blood cell formation: One of the vital functions of the skeletal system is hematopoiesis, the process of blood cell formation. This occurs in the bone marrow, which is found inside certain bones, particularly in the flat bones like the sternum and pelvis. Red blood cells, white blood cells, and platelets are produced here.
- B. Storage of potassium: The skeletal system does play a role in storing minerals, although potassium is not the primary mineral stored in bones. Bones primarily store calcium and phosphate, which are essential for various physiological functions, including bone strength and muscle contraction. Potassium is mainly stored inside cells rather than in bones, but it does contribute to muscle function, which is connected to bones via tendons.
- D. Facilitation of movement: The skeletal system is essential for movement. Bones provide a rigid framework that supports muscles, which are attached to bones by tendons. When muscles contract, they pull on bones, facilitating movement. Joints between bones allow for mobility and flexibility.
In summary, the generation of ATP is a process carried out within cells, mainly through mitochondria, and is not a function of the skeletal system itself. The skeletal system is involved in blood cell production, mineral storage (primarily calcium), and enabling movement through its connection to muscles.