PHYSIOLOGY
SKELETAL MUSCLE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The association site of the axon terminal of the motor neuron and sarcolemma of a muscle is called a ____
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synaptic cleft
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neuromuscular junction
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motor end plate
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neurotranmitter
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Explanation:
Detailed explanation-1: -The neuromuscular junction (NMJ) is a synaptic connection between the terminal end of a motor nerve and a muscle (skeletal/ smooth/ cardiac). It is the site for the transmission of action potential from nerve to the muscle.
Detailed explanation-2: -The neuromuscular junction is analogous to the synapse between two neurons. A nerve fibre divides into many terminal branches; each terminal ends on a region of muscle fibre called the end plate.
Detailed explanation-3: -Cell membranes of motor nerve terminals and muscle fibers are separated by a space called the synaptic cleft, which is approximately 30 – 50 nm.
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