Term
| general characteristics of muscular system |
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Definition
| excitability, contractibility, extensibility, elasticity |
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Definition
| muscles can receive & respond to stimuli |
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| muscles can receive & respond to stimuli |
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Definition
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Definition
| muscles shorten & thicken |
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Term
| muscles shorten & thicken |
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Definition
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Definition
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Definition
| after contraction or extension, muscles can return to their original shape |
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Term
| after contraction or extension, muscles can return to their original shape |
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Definition
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Term
| general functions of muscle |
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Definition
| motion, maintaining posture, & heat production (all done by skeletal muscle) |
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Term
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Definition
| skeletal, smooth, & cardiac |
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Term
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Definition
| multinucleated, striated, voluntary, cylindrical cells with zones, bands, & lines (?); attached to skeleton via tendons; fascia |
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Term
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Definition
| tense connective tissue that occurs in sheets & covers all SKELETAL muscle; epimysium + perimysium + endomysium |
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Term
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Definition
| there is ONE epimysium; outside covering of bundle of fascicles |
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Term
| outside covering of bundle of fascicles |
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Definition
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Definition
| fascia covering individual fascicles |
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Definition
| fascia covering individual muscle fibers (on the cellular level) |
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Definition
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Term
| fascia covering individual fascicles |
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Definition
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Term
| fascia covering individual muscle fibers |
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Definition
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Definition
| keeps muscle from overstretching & helps to return to original shape; carries blood vessels & nerves to individual muscle fibers |
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Term
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Definition
| uninucleated, striated, voluntary, quadrangular cells with bands, zones, & lines; intercalated discs |
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Term
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Definition
| gap junctions between fibers that allow for all cells to be stimulated simultaneously (atria contract, then ventricles contract, but one signal sets it all in motion) |
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Term
| gap junctions in cardiac muscle fibers |
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Definition
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Definition
| unstriated, involuntary, consists of 2 layers (circular layer & longitudinal layer) which together do peristalsis |
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Term
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Definition
| alternating contractions of circular & longitudinal layers cause wave-like contractions of smooth muscle that move things like food & babies down hollow internal passageways of the body |
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Term
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Definition
| encircles organs/ surrounds lumen of hollow organs; deeper of 2 layers; contracts to reduce the diameter of the lumen |
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Term
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Definition
| organs of respiratory, digestive, urinary, & reproductive tracts; encircled by circular layer of smooth muscle |
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Term
| encircles lumen of hollow organs & contracts to reduce the diameter of the lumen |
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Definition
| circular layer (smooth muscle) |
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Term
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Definition
| wraps around circular layer; runs longitudinally down tracts; contracts to reduce the length of the tract; more superficial smooth muscle layer |
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Term
| deeper smooth muscle layer |
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Definition
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Term
| more superficial smooth muscle layer |
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Definition
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Term
| smooth muscle that contracts to reduce the length of the tract |
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Definition
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