Bone tissue and terminology Flashcards
What tissue is a bone composed of?
Osseous tissue, cartilage, dense connective tissue, epithelium, adipose tissue and nervous tissue
bone
A organ because made up of 2+ types of tissue
types of long bone
arms, forearms, thighs and legs
Structure of long bone
Epiphysis
end of the bone, surface that forms joints with other bones and covered by articular cartilage. Contains red bone marrow
structure of long bone
Biaphysis
- long cylindrical portion in middle,
- linned by periosteum(outside) and endosteum (inner)
- Encloses the MEDULLARY cavity, which contains yellow bone marrow
Ostenogenic cells
act as stem sells
Osteoblasts
produce the extracellular matrix (blasts=build)
Osteoclasts
break down the extracellular matrix (clasts=cut)
osteocytes
mature bone cells that maintain its metabolism
Extracellular matrix
- surrounds bone tissue cells
- made up of mostly CRYSTALIZED MINERAL SALTS 55%, water and collagen fibers
What is Compact bone tissue
- stronger and heavier
- made of tightly packed arranged lamellae called OSTEONS
WHere is compact bone tissue located
BENEATH THE PERIOSTEUM OF ALL BONES
- most of the DIAPHYSIS OF LONG BONES
What is spongy bone tissue
-lighter (less energy to move)
- Conssits of irregular lamellae called TRABECULAE, with spaces filled with MARROW between
where is spongy bone tissue foudns
- most of the INTERIOR OF SHORT, FLAT AND IRREGULAR BONES
- most of the EPIPHYSIS OF LONG BONES
-narrow rim surrounding the MEDULLARY CAVITY (long bones)
Red bone marrow
- produces stem cells
- produces red blood cells, white blood cells and platelets
