Yellow bone marrow is found in the diaphysis and stores fat.

Yellow bone marrow is found in the diaphysis and stores fat.

• A. Yellow Bone Marrow
• B. Red Bone Marrow
• C. Cartilage
• D. Tendon

Answer: (A)

Yellow bone marrow is the fatty tissue that fills the medullary cavity of the diaphysis in long bones, serving as an energy reserve by storing fat. In adults, this fatty marrow replaces much of the red, hematopoietic marrow that is found in the epiphyses of long bones and in flat bones. Red marrow is where blood cells are produced, not fat storage. Cartilage and tendons are different tissues entirely—cartilage cushions joints, and tendons connect muscle to bone. As people age, the diaphysis becomes filled with yellow marrow, while red marrow remains in bones where hematopoiesis is needed.

Yellow bone marrow is the fatty tissue that fills the medullary cavity of the diaphysis in long bones, serving as an energy reserve by storing fat. In adults, this fatty marrow replaces much of the red, hematopoietic marrow that is found in the epiphyses of long bones and in flat bones. Red marrow is where blood cells are produced, not fat storage. Cartilage and tendons are different tissues entirely—cartilage cushions joints, and tendons connect muscle to bone. As people age, the diaphysis becomes filled with yellow marrow, while red marrow remains in bones where hematopoiesis is needed.