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Why is it that our limbs get numb if we ...

Why is it that our limbs get numb if we sit in the same position for long?

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### Step-by-Step Solution: 1. **Understanding the Position**: When we sit in the same position for an extended period, certain areas of our body, particularly our limbs, can become compressed. 2. **Formation of Pressure**: Sitting in a fixed posture creates pressure on the nerves in our legs. This pressure can occur if we cross our legs or sit on them. 3. **Nerve Compression**: The pressure from our body weight compresses the nerves in the legs. This compression disrupts the normal functioning of these nerves. ...
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ICSE-NEURAL CONTROL AND CO-ORDINATION -TEST YOUR PROGRESS ( SHORT/LONG ANSWER TYPE QUESTIONS )
  1. Which division-sympathetic or parasympathetic of the autonomic nervous...

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  2. Give the sequence of the structures that form the gustatory pathway.

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

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

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

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

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

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  8. What is motor end-plate?

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

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

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

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  12. Write in brief the structure of human brain.

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

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  14. Distinguish between sympathetic and parasympathetic system.

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  15. Describe the saltatory conduction of nerve impulses.

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

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  17. How ear helps in hearing ?

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

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

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

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