Question

Consider the following statements Statement I: Bones are homeostatic reservoirs of calcium, magnesium and phosphorus Statement II: Bones are highly vascular. The correct answer is

• A. Both statements I and II are true
• B. Both statements I and II are false
• C. statement I is true, but statement II is false
• D. statement I is false, but statement II is true

Hint:

Blood vessels within bones are essential for transporting minerals during bone remodeling and for supporting hematopoiesis (blood cell formation) in the bone marrow.

Answer 1

The Correct Option is A

Concept: Bone tissue serves as both a structural support and a metabolic reservoir.
Explanation: Statement I is true as bone matrix stores $99%$ of the body's calcium, along with significant amounts of magnesium and phosphorus, crucial for mineral homeostasis. Statement II is true because bones are highly vascular, with numerous blood vessels running through the central (Haversian) canals.