Q:

In the control of respiration, which of the following is NOT TRUE?

waelhammad
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2022-10-19
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In the control of respiration, which of the following is NOT TRUE?

  1. Peripheral chemoreceptors respond to changes in oxygen and carbon dioxide concentration in the blood
  2. Chemoreceptors in the central nervous system respond to changes in carbon dioxide concentration in the blood
  3. Respiration responds to smaller changes in the blood concentration of oxygen than carbon dioxide
  4. Central chemoreceptors are sensitive to changes in the pH of the cerebrospinal fl uid
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waelhammad
2022-10-19
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B: Chemoreceptors in the central nervous system respond to changes in pH as there is no buffer in CSF. The presence of carbon dioxide in CSF generates hydronium ions which affect the central chemoreceptors. 

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