Term
| 7 functions of the muscular system |
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Definition
Movement, Posture, Breathing, body Heat, Communication, Constriction of organs/vessels, contraction of Heart
Mnemonic: May Polly Bring Her Comic Con Hat? |
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Term
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Definition
| property of muscle which allows it to shorten with force |
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Definition
| capacity of muscle to respond to a stimulis (from nerves). This is the mechanism of action for muscle |
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Definition
| the general property of muscle that allows it to be stretched to its normal resting length and beyond (to a limited degree) |
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Definition
| ability of muscle to recoil to original resting length after stretched |
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Definition
| responsible for motion, expressions, diaphragm movement, etc; voluntary; independent parallel motion |
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Definition
| blood vessels, eye, glands, skin; involuntary: endocrine and ANS |
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Definition
| heart; autorythmic; involuntary: endocrine and ANS |
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Term
Fibers and Tissues of Muscle
(actin --> muscular fascia) (12) |
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Definition
| 1]Actin and 2]myosin are organized into 3]myofibrils, which are surrounded by 4]SR, covered with the 5]sarcolemma forming a 6]myofiber; myofibers are covered by 7]endomysium and organized in 8]fasciculae which are covered by 9]perimysium; a bundle of fasciculae make up a 10]muscle, and are surrounded by the 11]epimysium, and the 12]muscular fascia |
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Term
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Definition
| connective tissue that binds muscle to bone (extension of epimysium) |
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Term
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Definition
| contact between highly branched axon and muscle cell |
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Term
| muscular: cell; membrane; cytoplasm |
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Definition
| myofiber; sarcolemma; sarcoplasm |
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Term
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Definition
| functional unit of muscle: intertwined actin and myosin filaments (myosin moves along actin), actin binds Z disc; sarcomere goes from disc to disc |
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Definition
| long fiber that covers active sites of individual actin molecules |
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Term
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Definition
| small molecule that--when stimulated--moves tropomyosin to allow myosin to bind the active sites on the actin molecules |
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Definition
| ATP dependent bending from one active site to the next in order to move along actin filament |
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Definition
| length in sarcomere from end to end of myosin filament; doesn't change during contraction |
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Definition
| distance between actin filaments in a sarcomere; narrows/disappears between contraction |
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Definition
| length of actin molecules on either side of a Z-disk which is not overlapped by myosin; narrows during contraction |
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Definition
| middle of H zone, delicate filaments holding myosin in place |
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Term
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Definition
| elastic chains of amino acids, cause extensibility and elasticity of muscle |
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