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Cards In This Set
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Cardiac and skeletal muscle are _____
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Striated
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Cardiac and smooth muscle are also _______
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Involuntary
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Smooth muscle is typically found within the walls of hollow visceral organs, blood vessels, and ____
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Airways
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A skeletal muscle cell is called a _____ fiber
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Muscle
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Epimysium
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 Epimysium |
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Perimysium
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 Perimysium |
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Fasicicles and endomysium and muscle fibers.
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 Fascicles |
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Functional unit of muscle contraction is the sarcolemma, sarcoplasmic reticulum, and _____
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Sarcoplasm
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Thin myofilaments are composed of myosin, actin, and light chain _____
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Myokinase
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The sarcoplasmic reticulum of muscle fibers is a storage site for calcium ions and releases the calcium when stimulated.
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By action potential
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_ tubules are continuous with the sarcolemma
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T
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An action potential is a rapid up and down shift in the voltage across a membrane from the negative resting to a positive ____
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Value
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Resting membrane potential is maintaned by
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Sodium potasium ATP pump
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Acetyl choline is the neurotransmitter released from vesicles in the synaptic knob of the ____
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Neuron
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Excitation-Contraction Coupling
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1.) Nerve signal
2.) Calcium is released
3.) ACh diffuses across synaptic cleft
4.) Binding causes a comformational change
5.) K+ gates open
6.) Depolarization spreads along sarcolemme
7.) depolar runs through T Tubules
8.) Ca2+ diffuses out of SR and binds to troponin
9.) Active sites exposed
10.) ATP causes release of G-Actin
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