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GCSE Biology Paper 1 (9-1 Exams)

Rate Heart Breathing Breath Volume Increases Oxygen Exercise

Front What happens to the heart rate, breathing rate and breath volume in exercise?
Back
  • Breathing rate and breath volume increases to meet the demand for extra oxygen
  • Heart rate increases to make blood flow more quickly, delivering more oxygen and glucose to cells for respiration, taking more carbon dioxide away.

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