PHYSIOLOGY
SKELETAL MUSCLE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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neuromuscular junction
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action potential
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neurotransmitter
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acetylcholine
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Detailed explanation-1: -action potential action potential is the unstoppable electric current that travels down the len…
Detailed explanation-2: -A skeletal muscle action potential is generated when the motor endplate potential is sufficient to raise the surrounding sarcolemmal potential above the threshold for activation of the voltage gated Na+ channels that are abundant throughout the sarcolemma.
Detailed explanation-3: -The T-tubules carry the action potential into the interior of the cell, which triggers the opening of calcium channels in the membrane of the adjacent SR, causing Ca++ to diffuse out of the SR and into the sarcoplasm.
Detailed explanation-4: -The neuromuscular junction (NMJ) is a synaptic connection between the terminal end of a motor nerve and a muscle (skeletal/ smooth/ cardiac).