MRCP UK EXAMINATIONS

Detailed explanation-1: -People are born with only red bone marrow. As a person matures, the red marrow in many of the bones is replaced by yellow marrow. By adulthood, only about half of the bone marrow is red. Red bone marrow is found mostly in the ribs, breastbone, shoulder blades, collarbones, hip bones, skull, and spine.

Detailed explanation-2: -Red bone marrow is primarily found in the medullary cavity of flat bones such as the sternum and pelvic girdle. This type of bone marrow contains hematopoietic stem cells, which are the stem cells that form blood cells.

Detailed explanation-3: -The location of the red bone marrow of an adult or younger individual differs from the location of the red bone marrow of an infant. The red marrow can be found inside the regions of spongy bones, in the medullary cavity of the diaphysis in the case of neonates or infants.

Detailed explanation-4: -adult: erythropoiesis only in ribs, sternum, vertebrae, shoulder girdle, proximal femur and tibia.