Home
Class 12
BIOLOGY
Stimulation of a muscle fiber by a motor...

Stimulation of a muscle fiber by a motor neuron occurs at

A

the neuromuscular junction

B

the transverse tubules

C

the myofibril

D

the sarcoplasmic reticulum

Text Solution

Verified by Experts

The correct Answer is:
A
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.
Promotional Banner

Similar Questions

Explore conceptually related problems

Stimulation of muscle fibre by a motor neuron occurs at

Stimulation of muscle fibre by a motor neuron occurs at

Stimulation of muscle fibre by a motor neuron occurs at

The brief contraction of all the muscle fibres in a motor unit in response to a single action potential in its motor neuron is called

Pseudounipolar neurons occur in

Assertion : The contraction and relaxation of muscle fiber are controlled by nerve impulses. Reason : The threshold stimulus is the minimum stimulus required for the beginning of contraction.

in which of the following disease, does constriction of smooth muscle in the Wall of bronchioles occur?

State the function of sensory neuron and a motor neuron.

The neuron which connects two or more neurons (like sensory and motor neuron) and present in central nervous system is called

Read the following statements and select the correct option : I. In the skeletal muscles fibre, large number of myofilaments are arranged in the sarcoplasm. II. The central part of an anisotropic band where the only thick , filament is present and thin filament is absent is called 'A' band. III. In the resting state , a tropomyosin protein masks the active b binding sites for myosin on the active filaments . IV. The junction between a motor neuron and the sarcolemma of the muscle fibres is called motor-end plate.