PHYSIOLOGY
MUSCLE CONTRACTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The gap between the motor neuron and the muscle fiber
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sarcoplasmic reticulum
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synaptic cleft
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H zone
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T-tubule
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Explanation:
Detailed explanation-1: -Cell membranes of motor nerve terminals and muscle fibers are separated by a space called the synaptic cleft, which is approximately 30 – 50 nm.
Detailed explanation-2: -In fact, the synaptic cleft between an axon terminal and muscle cell is called a neuromuscular junction.
Detailed explanation-3: -The space between the two is known as the synaptic cleft. The space tells us there must be some intermediary signaling mechanism between the presynaptic neuron and the postsynaptic neuron in order to have information flow across the synaptic cleft.
Detailed explanation-4: -The tiny gap between a neuron and a muscle cell is known as a neuromuscular junction.
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