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13 Cards in this Set
- Front
- Back
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Functions of Musculoskeletal System
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Support for body
Movement & Standing Protects & encases inner vital organs Produces RBC's in bone marrow Reservoir for storage of essential minerals |
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Nonsynovial joints
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Immovable, slightly movable
Bones united by fibrous tissue or cartilage |
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Synovial
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Freely movable, enclosed in joint cavity
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Synovial Cavity
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filled with synovial fluid
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Cartilage
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covers surface of opposing bones; avascular, stable, tough, firm, flexible, cushions bone
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Ligaments
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support joints; fibrous bands that run from one bone to another, strengthens joint, and prevents movement in undesirable directions
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Bursa
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enclosed sac filled with synovial fluid located in areas of potential friction and help muscles and tendons glide smoothly over bone
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Tendon
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Attaches skeletal muscle to bone
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Spine: # of each type of bone
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7 cervical, 12 thoracic, 5 lumbar, 5 sacral,3-4 coccygeal
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Vertebrae
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Four curves, cervical and lumbar = concave, thoracic and sacrococcygeal = convex
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Intervertebral Disks
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Elastic fibrocartilaginous plates that make up 1/4 length of column.
Each disk has nucleus pulposus with soft, semi-fluid mucoid material - shock absorber and helps it move - compress one side with compensatory expansion on other |
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Glenohumeral Joint
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articulation of humerus with glenoid fossa of scapula -> enclosed by rotator cuff
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Rotator Cuff
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Four powerful muscles and tendons that enclose glenohumeral joint, support and stabilize it
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