Q:

With regard to the respiratory centre, which of the following is TRUE?

waelhammad
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2022-10-19
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With regard to the respiratory centre, which of the following is TRUE?

  1. Blood oxygen concentration affects the respiratory centre.
  2. Anaesthetics don’t affect respiration.
  3. Raised intracranial pressure increases ventilation.
  4. Narcotic drugs may depress ventilation.
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waelhammad
2022-10-19
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D: Anaesthesia or narcotics (e.g. morphine) can depress respiratory centres (which decreases ventilation). As can raised intracranial pressure. It is CO 2 concentration rather than O 2 concentration that affects the respiratory centre of the brain. 

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