Cancellous bone

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Cancellous bone
Illustration of a section through long bone, with spongy bone in its center.
Light micrograph of cancellous bone, stained with hematoxylin and eosin, showing bone trabeculae (stained pink) and marrow tissue (stained blue).
Latin	substantia spongiosa ossium
Gray's	subject #18 86
Dorlands/Elsevier	s_27/12766958

Cancellous bone (also known as trabecular, or spongy) is a type of osseous tissue with a low density and strength but very high surface area, that fills the inner cavity of long bones. The external layer of cancellous bone contains red bone marrow where the production of blood cellular components (known as hematopoiesis) takes place. Cancellous bone is also where most of the arteries and veins of bone organs are found.

The other type of osseous tissue is known as cortical bone, forming the hard outer layer of bone organs.

[edit] External links

• Article with some info on spongy bone
• Histology at BU 02601lba - "Cartilage and Bone and Bone Histogenesis: trabecular, woven and lamellar bone"
• substantia+spongiosa at eMedicine Dictionary
• Histology at OU 69_02 - Femur

v • d • e Musculoskeletal system, connective tissue: bone and cartilage Cartilage perichondrium, fibrocartilage callus, metaphysis cells (chondroblast, chondrocyte) types (hyaline, elastic, fibrous) Bone ossification (intramembranous, endochondral, epiphyseal plate) cycle (osteoblast, osteoid, osteocyte, osteoclast) types (cancellous, cortical) regions (epiphysis, metaphysis, diaphysis) structure (osteon/Haversian system, Haversian canals, Volkmann's canals, endosteum, periosteum, Sharpey's fibres, enthesis, lacunae, canaliculi, trabeculae, medullary cavity, bone marrow) shapes (long, short, flat, irregular, sesamoid)