As the impulse reaches the end of an axon, a chemical called ___ is released.

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Solution

Acetylcholine is an organic chemical that functions in the brain and body of many types of animals, including humans, as a neurotransmitter—a chemical message released by nerve cells to send signals to other cells [neurons, muscle cells, and gland cells]. It is the chemical that motor neurons of the nervous system release in order to activate muscles.

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Similar questions

Q. As the impulse reaches the end of an axon, a chemical called ______ is released.

Q. The chemicals released when the electrical impulse reaches the axon ending is called ‘X’. These ‘X’ are present in ‘Y’ located in the ‘Z’. Identify X, Y and Z.

The substance that is released at axonal endings to propagate a nervous impulse is called ___.

Q. Question 21
Which of the following statements about transmission of nerve impulse is incorrect?

(a) Nerve impulse travels from dendritic end towards axonal end.
(b) At the dendritic end electrical impulses bring about the release of some chemicals which generate an electrical impulse at the axonal end of another neuron.
(c) The chemicals released from the axonal end of one neuron cross the synapse and generate a similar electrical impulse in a dendrite of another neuron.
(d) A neuron transmits electrical impulses not only to another neuron but also to muscle and gland cells.

Question 2
Electrical impulse travels in a neuron from

(a) Dendrite → axon → axonal end → cell body
(b) Cell body → dendrite → axon → axonal end
(c) Dendrite → cell body → axon → axonal end
(d) Axonal end → axon → cell body → dendrite

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