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Myelinated and Unmyelinated Fibres

Myelin sheath...

Question

Myelin sheath is produced by :

A

Schwann cells and oligodendrocytes

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B

astrocytes and Schwann cells

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C

oligodendrocytes and osteoclasts

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D

osteoclasts and astrocytes

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Solution

The correct option is A Schwann cells and oligodendrocytes
Myelin sheath covers around the axon of the neuron. It is produced by Schwann cells and oligodendrocytes.

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Similar questions

Q. Is myelin sheath present around the Schwann cell or Schwann cells are present around myelin sheath?

Q. Myelin sheath is produced by oligodendrocytes in CNS and Schwann cells in PNS. But unmylinated neurons are present in ANS and SNS...how are they unmylinated if oligodendrocytes produce them??

A myelinated nerve fibre is enveloped by Schwann cells, which form a myelin sheath around the axon.

An unmyelinated nerve fibre is not enclosed by a Schwann cell and hence does not form a myelin sheath around the axon.

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.

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