Question

1. what is the basic functional unit of compact bone?

a. red bone marrow
b. the periosteum
c. the osteon
d. the trabecula

Explanation:

To determine the basic functional unit of compact bone, we analyze each option:

• Option a: Red bone marrow is involved in blood cell production, not the functional unit of compact bone.
• Option b: The periosteum is a membrane covering bone, not the functional unit.
• Option c: The osteon (or Haversian system) is the basic functional unit of compact bone, consisting of concentric lamellae around a central canal.
• Option d: Trabeculae are part of spongy (cancellous) bone, not compact bone.

Answer:

c. The osteon