What is the primary function of yellow bone marrow in adults?

• A. To produce white blood cells
• B. To produce red blood cells
• C. To provide structural support to bones
• D. To store fat

Answer: (D)

Verified step by step guidance

1. Understand the composition of bone marrow: Bone marrow is a soft tissue found in the hollow interior of bones. There are two types of bone marrow: red and yellow.
2. Differentiate between red and yellow bone marrow: Red bone marrow is primarily involved in hematopoiesis, which is the production of blood cells, including red blood cells, white blood cells, and platelets. Yellow bone marrow, on the other hand, is primarily composed of adipocytes (fat cells).
3. Identify the primary function of yellow bone marrow: In adults, yellow bone marrow serves as a storage site for fats, which can be used as an energy reserve. This is its primary function, rather than blood cell production.
4. Consider the location and transformation of bone marrow: In children, most of the bone marrow is red, but as a person ages, much of it is converted to yellow bone marrow. This transformation reflects the shift in function from blood cell production to fat storage.
5. Conclude with the role of yellow bone marrow in adults: The primary function of yellow bone marrow in adults is to store fat, which can be mobilized as an energy source when needed.