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A&P 1 CH 6 Part 3

Anatomy of Bone

made of of collagen fibers embedded in a protein and polysaccharides matrix
functions of bone support, protection, leverage, storage, blood cell formation
light and spongy bone cancellous bone
dense and heavy bone compact bone
compact bone is composed of these that run lengthwise with the bone haversian systems
concentric layers of ossified bone matrix arrange around this central canal
Each ____ is occupied during life by a branched cell, termed an _____, bone-cell or bone-corpuscle lacuna; osteocyte
most abundant cell found in compact bone osteocyte
lacunae are connected to one another by small canals called canaliculi
A lacuna never contains more than one ____ osteocyte
membrane that covers outer surfaces of bones periosteum
outer layer of periosteum is composed of fibrous tissue
inner layer of periosteum contains these immature bone cells osteoblasts
membrane that lines the hollow interior surfaces of bones; also contains osteoblasts endosteum
____ that become trapped in the bone matrix and remain isolated in _____ become ______ osteoblasts; lacunae; osteocytes
cells that produce bone, harden matrix through ossification osteoBLASTS
remodel/remove bone; allow the body to withdraw calcium from the bone with the blood level is low osteoCLASTS
channels through bone matrix that contain blood vessels and enter at right angles into the periosteum Volkmann canals
channels in many large bones that contain large blood vessels, lymph vessels, and nerves nurtient foramina
grows into and replaces cartilage; primary growth center where bones develop in the diaphysis ( shaft of the cartilage rod); secondary growth centers develop in epiphysis (end of cartilage rods) endochondral bone formation
develops from fibrous tissue membranes; occurs in certain skull bones; creates flat bones of the cranium intramembranous bone formation
bones that are longer than they are wide; make up majority of our bones long bones
shaped like small cubes; spongy bone covered by compact short bones
thin and flat; cancellous bone sandwich between two compact bone flat
miscellaneous bones irregular
forms blood cells, majority in young animals red bone marrow
consists primarily of adipose connective tissue; most common type in adult animals, can convert to red bone marrow if needed yellow bone marrow
Created by: maiken



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