A) the neuromuscular junction
B) the transverse tubules
C) the myofibril
D) the sacroplasmic reticulum
Correct Answer: A
Solution :
Stimulation of a muscle fibre by a motor neuron occurs at neuromuscular junction. The area of contact between a nerve and muscle fibre. It is also called motor-end plate. At neuromuscular junction a neuron activates a muscle to contract during the excitation contraction coupling of vertebrate skeletal muscles.
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