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24 Cards in this Set
- Front
- Back
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Motion results from...
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Alternating contraction
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the study of muscles
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myology
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attached to bones
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skeletal muscle
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wall of heart
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cardiac
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located in viscera
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smooth (visceral)
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through contraction, muscles perform what four important functions...
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motion, stabalizing body positions, and regulating organ volume, and generation of heat
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thermogenesis
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generation of heat
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85 percent of this comes from contraction
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generation of heat/thermogenesis
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sustained smooth muscle contraction
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prevents outflow of contents of hollow organs, stomach, and bladder
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excitability
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ability to respond to certain stimuli by producing impulses (electrical signals)
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contractility
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ability to shorten and thicken (contract)
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extensibilty
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ability to be extended (stretched)
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elasticity
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ability to return to original shape
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blood supplies what?
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nutrients and oxygen
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motor neurons are where?
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nerves
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superficial fascia
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underneath skin
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deep fascia
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around muscles and organs
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connective tissue components (3)
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epimysium, perimysium, and endomysium
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epimysium
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covering entire muscle
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perimysium
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covering faciculi
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endomysium
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covering indiviual muscle fibers
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tendons
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attach muscle to bone
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tendon (synovial) sheaths
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slide back and forth
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motor unit...formed of:
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motor neuron and muscle fibers
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