Question

1. which of the following explains the difference between the structure of compact bone and spongy bone? a. compact bone tissue is made up of trabeculae and red bone marrow, whereas spongy bone tissue is made up of haversian systems and yellow bone marrow. b. compact bone tissue is made up of structural units called osteons, whereas spongy bone tissue is made up of a lattice of struts called trabeculae. c. compact bone tissue is filled with red bone marrow, whereas spongy bone tissue is filled with yellow bone marrow. d. compact bone tissue is made up of a lattice of struts called trabeculae, whereas spongy bone tissue is made up of structural units called osteons.

Explanation:

To solve this, we analyze each option:

• Option a: Incorrect. Compact bone has Haversian systems (osteons), not trabeculae/red marrow. Spongy bone has trabeculae and red marrow, not Haversian systems/yellow marrow.
• Option b: Correct. Compact bone's structural units are osteons (Haversian systems), and spongy bone has a trabecular lattice.
• Option c: Incorrect. Compact bone has yellow marrow in its central canals (not filled with red), and spongy bone has red marrow in its spaces.
• Option d: Incorrect. It swaps the structures of compact and spongy bone.

Answer:

b. Compact bone tissue is made up of structural units called osteons, whereas spongy bone tissue is made up of a lattice of struts called trabeculae.