Question
Biology Question on locomotion and movement
Stimulation of a muscle fiber by a motor neuron occurs at
A
the neuromuscular junction
B
the transverse tubules
C
the myofibril
D
the sacroplasmic reticulum.
Answer
the neuromuscular junction
Explanation
Solution
A neuron that transmits a stimulus to muscle tissue is called motor neuron. A motor unit consists of a single motor neuron (nerve cell) and the muscle fibres it innervates. The portion of the muscle plasma membrane (sarcolemma) that lies beneath the nerve endings (axon