MUSCLE
SKELETAL MUSCLE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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For a signal to get from a neuromuscular synapse to a T-tubule, it must travel along what?
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sarcolemma
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sarcoplasmic reticulum
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myofibril
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myofilament
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Explanation:
Detailed explanation-1: -At the neuromuscular junction, the nerve fiber is able to transmit a signal to the muscle fiber by releasing ACh (and other substances), causing muscle contraction.
Detailed explanation-2: -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-3: -The transmission of a signal from the motor neuron to the sarcolemma of a muscle fiber occurs during the: excitation phase. Local depolarization of the motor end plate is called: an end-plate potential.
There is 1 question to complete.