In the diagram of multipolar myelinated neuron given above, different parts have been indicated by alphabets. Choose the answers in which these alphabets have been correctly matched with the parts, which they indicate.

A- Cell body, B- Nissl bodies, C- Nucleus, D- Dendrites, E- Naked portion of axon, F- Myelin sheath, G- Node of Ranvier

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A- Cell body, B- Nissl bodies, C- Naked portion of axon, D- Dendrites, E- Nucleus, F- Myelin sheath, G- Node of Ranvier

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A- Cell body, B- Nissl bodies, C- Naked portion of axon, D- Nucleus, E- Dendrites, F- Myelin sheath, G- Node of Ranvier

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A- Cell body, B- Nissl bodies, C- Dendrites, D- Nucleus, E- Naked portion of axon, F- Myelin sheath, G- Node of Ranvier

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Solution

The correct option is D A- Cell body, B- Nissl bodies, C- Dendrites, D- Nucleus, E- Naked portion of axon, F- Myelin sheath, G- Node of Ranvier
A neuron is a structural and functional unit of the nervous tissue. It develops from the ectoderm of the embryo. The special properties of the nervous tissue are excitability and conductivity. A neuron consists of the main cell body and cytoplasmic processes arising from it. Neurons consist of the cell body, Nissl bodies, Dendrites, Node of Ranvier, Nucleus, a naked portion of an axon, Myelin sheath.
The option in which the parts are correctly matched with the alphabets is D.

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Similar questions

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.

Q. Electrical impulse travels in a neuron from :
(a) dendrite → axon → axon end → cell body
(b) cell body → dendrite → axon → axon end
(c) dendrite → cell body → axon → axon end
(d) axon end → axon → cell body → dendrite

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

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. Assertion :Non-myelinated nerve fibres do not possess nodes of Ranvier. Reason: This is due to the absence of nissl's bodies in node of Ranvier.

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