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29 Cards in this Set
- Front
- Back
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bone forming cells, live inside matrix
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osetocytes
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bone growth and repair, change change thickness and takes three weeks
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remodeling
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tightly organized
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compact bone
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in compact bone
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yellow bone marrow
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disorganized
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spongy bone
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in spongy bone and produces blood cells
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red bone marrow
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not as strong as bone, but more flexible, no blood vessels and takes longer to heal
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cartilage
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connect bone to bone
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ligament
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connect muscle to bone
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tendon
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where is muscle origin?
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on the stationary bone
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where is muscle insertion?
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on the bone that moves
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group of muscle fibers ensheathed by connective tissue
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muscle bundle
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skeletel muscle cell
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muscle fiber
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rod like unit of a muscle
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myofibril
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contractile filaments
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sarcomere structure
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thin filament linked at z line
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actin
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thick filament
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myosin
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where actin link to contract muscle
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z line
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inactivity decreases muscle size
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atrophy
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prolonged use increases muscle size
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hypertrophy
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red muscle, designed for endurance, produce ATP aerobically, dark from myoglobin, substantial reserves of glycogen
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slow oxidative fibers
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white muscle, designed for max short rapid explosive power, produce ATP by glycolysis, builds lactic acid
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fast glycolytic fibers
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what are the 5 functions of the skeleton?
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structural support, protection, production of blood cells, storage of minerals and fats, locomotion
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what are the four joint types?
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hinged, ball and socket, pivot, gliding
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only bone not articluated with another?
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hyoid bone
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how many cervical vertebrae?
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7
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thoracic?
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12
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lumbar?
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5
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actin slides past myosin. actin and myosin do NOT shorten
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sliding filament mechanism
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