Question

question 52
1.25 pts
the small, fluid-filled cavity occupied by an osteocyte is called a(n):
central canal.
trabecula.
osteon.
lacuna.

question 53
1.25 pts
whose bone marrow is mostly red?
young adults
infants
elderly
middle-aged adults

Explanation:

Analyze Question 52

Using the Lacunae and Canaliculi knowledge point

• The question asks for the name of the small, fluid-filled cavity occupied by an osteocyte.
• Osteocytes reside within small spaces in the bone matrix called lacunae (singular: lacuna).
• Therefore, the correct option is "lacuna."

Analyze Question 53

Using the Yellow Bone Marrow Function knowledge point

• The question asks whose bone marrow is mostly red.
• Infants have red bone marrow throughout most of their skeleton to support rapid growth and high demand for blood cell production.
• As individuals age, much of this red marrow is converted to yellow marrow (fat storage).
• Therefore, infants have bone marrow that is mostly red.

Answer:

Question 52

• central canal.
• trabecula.
• osteon.
• lacuna. (Correct answer)

Question 53

• young adults
• infants (Correct answer)
• elderly
• middle-aged adults