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A-Level Biology OCR A

Tidal Breathing Rate Oxygen Volume Uptake Greater Increases

Increased tidal volume and breathing rate enhance oxygen uptake to meet the body's demand during exercise, which also increases CO2 production.

Un mayor volumen corriente y una mayor frecuencia respiratoria aumentan la captación de oxígeno para satisfacer la demanda del cuerpo durante el ejercicio, lo que también aumenta la producción de CO2.

Front Describe how tidal volume and breathing rate link to oxygen uptake and explain the importance of the change in tidal volume and breathing rate during exercise.
Back Tidal volume, breathing rate and oxygen uptake:
  • Greater tidal volume - more air moves into lungs - more oxygen uptake
  • Greater breathing rate - ventilation increases therefore oxygen uptake also increases
  • Important to meet demands of tissues when exercising bc they will produce more CO2 and demand more O2

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