MICROANATOMY

Detailed explanation-1: -Spongy (cancellous) bone is lighter and less dense than compact bone. Spongy bone consists of plates (trabeculae ) and bars of bone adjacent to small, irregular cavities that contain red bone marrow. The canaliculi connect to the adjacent cavities, instead of a central haversian canal, to receive their blood supply.

Detailed explanation-2: -Inside bones there is a supporting structure with interconnecting bony plates and rods called trabeculae. This structure is called trabecular or spongy bone because it looks a bit like sponge. Bone marrow is found in the “holes” of the spongy bone. Many of the bones contain red bone marrow at birth.

Detailed explanation-3: -Spongy bone, also known as cancellous bone or trabecular bone, is a type of bone tissue found at the ends of long bones and in the middle of other bones such as the vertebrae. It is lighter and less dense than compact bone. Spongy bone contains red bone marrow, which is responsible for producing blood cells.

Detailed explanation-4: -They project into the medullary cavity from the internal circumferential lamellae of the cortical bone. The trabecular network of spongy bone aids in reducing bone weight and density and functions to transfer force from the articular surface of cortical bone.