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Mark the incorrect one regarding the str...

Mark the incorrect one regarding the structures of a nerve cell ?

A

Dendrites - short and branched fibres which contains receptor proteins on their surface

B

Nissl's granules - found in cyton, dendrites and axon part of neuron

C

Axon - Functional part of neuron that transmit impulses away from the cyton

D

Schwann cell - Synthesises myelin sheath around axons in spinal and cranial nerves

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question regarding the incorrect statement about the structures of a nerve cell, we will analyze each option step by step. ### Step-by-Step Solution: 1. **Understanding Dendrites**: - Dendrites are short, branched fibers that extend from the nerve cell body (cyton). - They have receptor proteins on their surface that receive signals from other neurons. - **Conclusion**: The statement about dendrites is correct. 2. **Analyzing Nissl Granules**: - Nissl granules are primarily found in the cyton (cell body) of the neuron. - They are not present in the dendrites or the axon. - **Conclusion**: The statement that Nissl granules are found in dendrites and the axon is incorrect. 3. **Examining the Axon**: - The axon is indeed the part of the neuron that transmits impulses away from the cell body. - It is a long, slender projection that can extend over great distances. - **Conclusion**: The statement about the axon is correct. 4. **Looking at Schwann Cells**: - Schwann cells are responsible for synthesizing the myelin sheath around the axon in both spinal and cranial nerves. - This statement accurately describes the function of Schwann cells. - **Conclusion**: The statement about Schwann cells is correct. ### Final Conclusion: - The incorrect statement regarding the structures of a nerve cell is the one about Nissl granules being found in dendrites and the axon. Therefore, the correct answer is the second option.
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