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Exam (elaborations)

SLCC Exam 3 Quizlet Questions With Complete Solutions

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SLCC Exam 3 Quizlet Questions With Complete Solutions H zone only myosin Titian Provides structural support termination of contraction Ca2+ must leave troponin, allowing tropomyosin to cover myosin binding sites on actin To remove Ca2+ from cytosol Ca2+-ATPase in the sarcoplasmic reticulum...

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  • October 13, 2024
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  • 2024/2025
  • Exam (elaborations)
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UpperClass
SLCC Exam 3 Quizlet Questions With
Complete Solutions

H zone only myosin




Titian Provides structural support




termination of contraction Ca2+ must leave troponin, allowing tropomyosin to cover

myosin binding sites on actin

To remove Ca2+ from cytosol

Ca2+-ATPase in the sarcoplasmic reticulum

Transports Ca2+ from cytosol into the sarcoplasmic reticulum




isotonic twitch a twitch during which a muscle shortens and lifts a constant load




Tension Produced by each fiber




Isometric twitch A twitch during which a muscle generates for but does not shorten

, SLCC Exam 3 Quizlet Questions With
Complete Solutions
Best tension Right in the middle w/ the cross bridges




motor unit a motor neuron and all the muscle cells it stimulates




recruitment stimulus is sent to more muscle fibers, leading to more precise control




Slow oxidation fibers Appear dark red because they contain large amounts of myoglobin

and many blood capillaries. Generate ATP mainly by aerobic respiration




fast oxidative fibers contract quickly, have fast myosin ATPases, and have moderate

resistance to fatigue, Aerobic




fast glycolytic fibers Important for short-term intense, powerful movements. Prefer

glycolysis to make atp




muscle spindles receptors sensitive to change in length of the muscle and the rate of that

change

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