Question

question 13

which of the following is not a function of the skeleton?

a storageofcalcium and phosphate ions
b storageofred blood cells
c providing supportfor most muscles
d protecting thebrain
e protecting thespinal cord

Explanation:

Analyze the functions of the skeletal system

The skeletal system has several primary functions:

1. Support: It provides a structural framework for the body and supports most skeletal muscles.
2. Protection: It protects vital internal organs (e.g., the skull protects the brain, and the vertebral column protects the spinal cord).
3. Movement: It serves as levers for skeletal muscles to produce movement.
4. Mineral Storage: It stores and releases minerals, particularly calcium and phosphate ions.
5. Blood Cell Production: Red bone marrow produces red blood cells, white blood cells, and platelets (hemopoiesis).

Evaluate the given options

• A (Storage of calcium and phosphate ions): This is a true function of bone tissue.
• B (Storage of red blood cells): While the red bone marrow inside bones produces red blood cells, the skeleton does not store them. Red blood cells circulate in the cardiovascular system or are stored/filtered in organs like the spleen.
• C (Providing support for most muscles): This is a true function, as skeletal muscles attach to bones to support posture and movement.
• D (Protecting the brain): This is a true function performed by the cranial bones.
• E (Protecting the spinal cord): This is a true function performed by the vertebral column.

Therefore, the option that is not a function of the skeleton is B.

Answer:

• A Storageofcalcium and phosphate ions
• B Storageofred blood cells (Correct answer)
• C Providing supportfor most muscles
• D Protecting thebrain
• E Protecting thespinal cord