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HMS, BM EQ-Bank 307 MC

During an intense training session, an athlete's ventilation rate increases. What is the primary reason for this immediate physiological response?

  1. To increase oxygen delivery to working muscles and remove carbon dioxide
  2. To increase oxygen delivery to the lungs
  3. To decrease carbon dioxide levels in the blood
  4. To reduce heart rate during exercise
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Show Worked Solution

Consider Option A:  To increase oxygen delivery to working muscles and remove carbon dioxide

  • Ventilation rate increases to deliver more oxygen to working muscles and remove carbon dioxide produced during exercise.

Other Options:

  • B is incorrect: Ventilation increases oxygen delivery to working muscles, not just the lungs
  • C is incorrect: Ventilation increases to remove carbon dioxide and deliver oxygen, not just decrease carbon dioxide.
  • D is incorrect: Increased ventilation doesn’t reduce heart rate during exercise.