Which of the following is not correct-Neuromuscular junction is between the motor neuron-and muscle fibre-Acetylcholine is the Neurotransmitter-Acetylcholine binds to the receptor channels at the motor end of the plate of the muscles-The action potential-causes the release of acetylcholine-

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Biology

Neuromuscular Junction

Which of the ...

Question

Which of the following is not correct?

Neuromuscular junction is between the motor neuron and muscle fibre

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Acetylcholine is the Neurotransmitter

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Acetylcholine binds to the receptor channels at the motor end of the plate of the muscles

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The action potential causes the release of acetylcholine

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Solution

The correct option is D
The action potential causes the release of acetylcholine

An action potential at the pre-synaptic terminal and causes voltage gated calcium channels in the presynaptic membrane to open. Calcium ions enter the presynaptic terminal and initiate the release of the neurotransmitter acetylcholine from the synaptic vesicle.

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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. Acetylcholine is a neurotransmitter that is important in the transmission of signals from the motor neurons to the muscles.
Which of the following describes the action of acetylcholine?

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. 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

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