NEET 2014 Biology question

Stimulation of a muscle fiber by a motor neuron occurs at

(1)The neuromuscular junctionCorrect
(2)The transverse tubules
(3)The myofibril
(4)The sacroplasmic reticulum

Answer: (1)

Solution

A motor neuron and the muscle fibre it innervates meet at the neuromuscular junction (motor-end plate), where the neural signal releases acetylcholine, generating an action potential in the sarcolemma. The

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Question ID VK-091628