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Nerve impulses are conducted more rapidl...

Nerve impulses are conducted more rapidly in myelinated fibres than in non-myelinated fibres.

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Assertion : Myelin sheath insulates the nerve fibre and prevents its depolarisation. Reason : Nerve impulses are conducted more rapidly in non-myelinated nerve fibres than in myelinated ones.

Impulses travel much more rapidly along myelinated nerve

Distinguish between the following pairs : Conduction of nerve impulse in myelinated and non myelinated nerve fibres

Differentiate between Myelinated and non-myelinated nerve fibres

Differentiate between Myelinated and non- myelinated nerve fibres

What is action potential? Describe how the nerve impulse is propagated in a non-myelinated and myelinated nerve fibre.

In the central nervous system myelinated fibres form the …. While the non-myelinated fibre cells form the …….

White muscle fibres contain more

Which of the following has non-myelinated nerve fibre

Differentiate between : Myelinated and non-myelinated axons

ICSE-NEURAL CONTROL AND CO-ORDINATION -TEST YOUR PROGRESS ( SHORT/LONG ANSWER TYPE QUESTIONS )
  1. Give the sequence of the structures that form the gustatory pathway.

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  2. Why is it that our limbs get numb if we sit in the same position for l...

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  3. If the spinal cord was severed where it joins the brain stem, what eff...

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  4. How damage to the lower portion of the spinal cord affect defecation?

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  5. A person has a severe blow to the head but appears to be all right. Ov...

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  6. What is a reflex action? Give two examples of conditioned reflexes.

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  7. What is motor end-plate?

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  8. Nerve impulses are conducted more rapidly in myelinated fibres than i...

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  9. Distinguish between the following pairs : Conduction of nerve impul...

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  10. Explain the mechanism of conduction of nerve impulse through a nerve f...

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  11. Write in brief the structure of human brain.

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  12. Draw the structure of the human ear and label the following parts: (i)...

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  13. Distinguish between sympathetic and parasympathetic system.

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  14. Describe the saltatory conduction of nerve impulses.

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  15. When we turn round and round, we lose our balance.

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  16. How ear helps in hearing ?

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  17. What is reflex action? Write its types and two examples.

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  18. Draw a diagram of the human eye as seen in a vertical section and labe...

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  19. Draw a neat and labelled diagram of cross-section of human eyeball. (D...

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  20. What are neuroregulators? Mention various types of them with examples.

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