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30 Cards in this Set
- Front
- Back
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Periosteum
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Double layered protective membrane
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Endosteum
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Delicate membrane covering internal surfaces of bone
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haversian System
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The structural unit of compact bone
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Lamella
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Central channel containing blood vessels and nerves
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Volkmann's Cannals
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At right angles to central canal connecting blood and nerve supply of the periosteum to the Haversian
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Osteocytes
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Mature bone cells
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Lacunae
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Small cavities in bone that contain osteocytes
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Canaliculi
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Hairlike canals that connect lacunae to each other and the central canal
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Osteoblasts
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Bone forming cells
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Osteocytes
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Mature Bone cells
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Osteoclasts
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Large cells that resorb bone
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Osteoid
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Unmineralized bone matrix
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Hydroxyapatites
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Mineral salts, calcuim phosphate
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Osteogenesis and Ossification
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Process of bone tissue formation
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Intramembranous Ossification
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Bone forms from a fibrus membrane
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Endochondral Ossification
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Bone forms by replacing hyaline cartilage
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Articulation
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Site where two or more bones meet
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Three structural types of joints
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Fibrous, Cartilaginous, Synovial
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Three functional types of joints
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Synarthroses, Amphiarthroses, Diarthroses
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Fibrous structural joints
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joined by fibrous tissue, no joint cavity, immovable
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Gomphoses
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Peg in socket joint between tooth and its alveolar socket
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Cartilaginous joints
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articulating bones joined by cartilage, lack a joint cavity
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Cartilaginous joints symphyses
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Hyaline cartilage covers the surface of bone and is fused to an intervening pad of fibrocartilage
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Synovial joints
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Joints where bones are sparated by a fluid filled cavity
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Flexion
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Bending movment that decreases the angle of the joint
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Extension
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Joint angle is increased
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Dorsiflexion
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Up and dpwn movement of the foot, Plantar flexion
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Adduction
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Movement towards the midline
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Abduction
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Movement away from the midline
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Circumduction
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Movement describes a cone
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