Stimulation of muscle fibre by a motor neuron occurs at

Options

A. the neuromuscular junction
B. the transverse tubules
C. the myofibril
D. the sarcoplasmic reticulum

Answer

A

Explanation

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 celled motor-end plate. At neuromuscular junction a neuron activates a muscle to contract during the excitation contraction coupling of vertebrate skeletal muscles.