Question

Yellow bone marrow is found especially in the medullary cavity of

• A. Spongy bones
• B. Long bones
• C. Short bones
• D. All of the above

Answer 1

Answer: (B)

Long bones

There are two types of bone marrow, red marrow and yellow marrow. Red bone marrow is found mostly in the ribs, skull, vertebrae, and pelvic bones. It is also the only type of bone marrow found in children. It is red because this is the type of marrow that produces red blood cells.

Yellow marrow is found in middle of long bones and, in the face of severe blood loss, is converted to haematopoietic red marrow.

Thus, the correct answer is option B.