Question

12
select the correct answer.
in this diagram of a long bone, which type of bone marking is circled?
bone marking
a. foramen
b. fossa
c. osteon
d. tubercle

Explanation:

To solve this, we analyze each option:

• Option A: A foramen is a hole in a bone through which blood vessels, nerves, etc., pass. In the diagram of a long bone, the circled marking (with blood vessels/nerves passing through) matches a foramen.
• Option B: A fossa is a depression or shallow cavity, not a hole for passage, so this is incorrect.
• Option C: An osteon is the basic structural unit of compact bone (a microscopic structure), not a bone marking visible at this diagram's scale, so incorrect.
• Option D: A tubercle is a small, rounded projection (for muscle/tendon attachment), not a hole, so incorrect.

Answer:

A. foramen