GENERAL HISTOLOGY

Detailed explanation-1: -Spongy bone has lots of needle like pieces called trabeculae and lots of spaces. We classify bones by their shape. Long-longer than wide, compact bone outside, some have spongy bone on the interior. Short-cuboid, mostly spongy bone with a layer of compact bone on the outside.

Detailed explanation-2: -Spongy bone is found mostly at the ends of bones and contains red marrow. Bone marrow is found in the center of most bones and has many blood vessels. There are two types of bone marrow: red and yellow. Red marrow contains blood stem cells that can become red blood cells, white blood cells, or platelets.

Detailed explanation-3: -Spongy bone is commonly found at the end of long bones, as well as the ribs, skull, pelvic bones and vertebrae. Located in the spaces, between the trabeculae of some spongy bones is red bone marrow. Blood vessels within red bone marrow supply osteocytes of spongy bone and aid in removing waste products.