What is the primary function of yellow bone marrow?

• A. Production of red blood cells
• B. Formation of bone matrix
• C. Storage of fat
• D. Production of white blood cells

Answer: (C)

Verified step by step guidance

1. Understand the different types of 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 involved in the storage of fat.
2. Recognize the location and composition of yellow bone marrow: Yellow bone marrow is found in the medullary cavity of long bones and is composed mainly of adipocytes, which are cells specialized in storing fat.
3. Identify the primary function of yellow bone marrow: The main role of yellow bone marrow is to store fat, which serves as an energy reserve for the body.
4. Differentiate between the functions of red and yellow bone marrow: While red bone marrow is active in blood cell production, yellow bone marrow's primary function is fat storage, although it can convert to red marrow under certain conditions, such as severe blood loss.
5. Consider the physiological significance of fat storage in yellow bone marrow: Fat stored in yellow bone marrow can be mobilized and used as an energy source during periods of increased energy demand or starvation.