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Neuron

of neuron rel...

Question

_ of neuron release __ which helps in effective and perpeptual flow of nerve impulses.

A

Dendrite and amino acids

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B

Axon ends and adrenaline

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C

Axon terminals and acetylcholine

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D

Axon and myelin of myelin sheath

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Solution

The correct option is C
Axon terminals and acetylcholine

Nerve impulses are perpetually transmitted by neurotransmitters (acetylcholine) which are secreted by axon terminals in synaptic clefts.

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Similar questions

Q. Match the following parts of a neuron to their respective functions.

Parts of Neuron	Functions
(A) Dendrite	(i) Insulates axon
(B) Axon	(ii) Recieves impulses
(C) Myelin sheath	(iii) Conducts impulses

Q. Read the given statements and select the correct option.
(i) Synaptic cleft of neurons secretes adrenaline.
(ii) Myelinated nerve fibres are enveloped with Schwann cells, which form a myelin sheath around the axon.
(iii) Non-myelinated nerve fibre is enclosed by a Schwann cells that does not form a myelin sheath.
(iii) Spinal and cranial nerves are made of non-myelinated nerve fibres

Q. Consider the following statements and state true or false.
1. Synaptic cleft of neurons secrete adrenaline.
2. Myelinated nerve fibres and enveloped with Schwann cells, which form a myelin sheath around the axon.
3. Non-myelinated nerve fibre is enclosed by a Schwann cell that does not form a myelin sheath.
4. Spinal cord and cranial nerves are made up of non-myelinated nerve fibres.

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.

Q. Consider the following statements and find out coorect option:
(a) Three are two types of axons, namely myelinated and non myelinated
(b) Myelinated nerve fibres found in autonomous and the somatic neural systems
(c) The myelinated nerve fibres are enveloped with Schwann cells, which form a myelin sheath around the axon.
(d) The gap between two adjacent myelin sheaths are calleds nodes of Ranvier.
(e) Unmyelinated nerve fibre found in spinal and cranial nerves
(f) Unmyelinated nerve fibre is enclosed by a Schwann cell that does not form a myelin sheath around the axon.

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