Anatomy Question As shown in this tracing the breath holding

Anatomy Question:

As shown in this tracing, the breath holding experiment demonstrated that the drive for ventilation is

decrease pO₂

decreased pCO₂

increased pCO₂

alkalosis

decrease pO2
		decreased pCO2
		increased pCO2
		alkalosis

20 Breath Holding Lab .cmbl 00 Oxygen Gas and Human Respiration 200

Solution

The increases breath holding time resulted in decrease in % of oxygen. This may be due to the decrease in oxygen levels increase carbon dioxide levels and thus the drive for ventilation is increased pCO₂. The increased pCO₂ is the result of holding breath increasing the levels of CO₂ dissolved in the blood. The option 3 is correct.