bone marrow

(bone MAYR-oh) Speaker

The soft, sponge-like tissue in the center of most bones. It produces white blood cells, red blood cells, and platelets.

Anatomy of the bone

Figure

Anatomy of the bone. The bone is made up of compact bone, spongy bone, and bone marrow. Compact bone makes up the outer layer of the bone. Spongy bone is found mostly at the ends of bones and contains red marrow. Bone marrow is found in the center of (more...)