IB Biology C3.1.15 Ventilation rate feedback control
IB Biology C3.1.15 Ventilation rate feedback control
Practise linking CO2, blood pH, chemoreceptors and the medulla to changes in ventilation rate during exercise, altitude or data tasks.
How this is tested
- explain why increased CO2 lowers blood pH and raises ventilation rate
- identify chemoreceptors and the medulla in blood pH monitoring questions
- interpret ventilation graphs involving arterial pH or atmospheric CO2