In the muscle fiber, what is the function of acetylcholinesterase?

It closes the neuromuscular junction to stop a muscle contraction.

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It acts as a receptor for acetylcholine.

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It deactivates acetylcholine.

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It stimulates the synaptic knob into functioning.

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Solution

The correct option is C
It deactivates acetylcholine.

Acetylcholinesterase stops the signal between a nerve cell and a muscle cell.

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Similar questions

Q. Assertion :A neuron chemically communicates with a myocyte by releasing acetylcholine into the myoneural junction. Reason: Acetylcholine diffuses across the nerve-muscle synaptic-cleft and binds to receptors on the sarcolemma which gets depolarized.

Q. Curare acts on the same receptors as acetylcholine but does not cause the effect of acetylcholine, nor is it easily decomposed or cleaved by cholinesterases. What is the effect of an injection of curare into a person?
I. Epileptic seizures
II. Muscle relaxation
III. Suffocation

Q. Select the correct option:
i) Muscle contraction takes place by sliding of thick filaments over thin filaments.
ii) When the neural signal reaches the neuromuscular junction, it releases acetylcholine, which helps generate an action potential in the muscle fibre.
iii) Muscle contraction begins by a signal sent by the peripheral nervous system by a motor neuron.

Given below is a randomly arranged list of events that occur at the neuromuscular junction to trigger muscle contraction.Which of the following gives the correct sequence of these steps?

(i) Acetylcholine binds to the receptor sites on sarcolemma

(ii) Nerve impulse

(iii) Release of Ca+2 from sarcoplasmic reticulum

(iv) The neurotransmitter acetylcholine is released

(v) Sarcomere shortens

(vi) Acetylcholine diffuses across the synaptic cleft

(vii) Spread of impulses over sarcolemma on T-tubules

Q. Following is given a randomly arranged list of events that occur at neuromuscular junction to trigger muscle contraction.
(i) Receptor sites on sarcolemma
(ii) Nerve impulse
(iii) Release of

C a^{+ 2}

from sarcoplasmic reticulum
(iv) The neurotransmitter acetylcholine is released (v) Sarcomere shorten
(vi) Synaptic cleft
(vii) Spread of impulses over sarcolemma on T-tubules
Which of the following gives the correct sequence of these steps ?

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In the muscle fiber, what is the function of acetylcholinesterase?

The correct option is C It deactivates acetylcholine. Acetylcholinesterase stops the signal between a nerve cell and a muscle cell.

The correct option is C
It deactivates acetylcholine.

Acetylcholinesterase stops the signal between a nerve cell and a muscle cell.