The primary factor believed to be responsible for stimulating the profound and abrupt increase in ventilation during exercise is increased arteria $\mathrm { P } _ { \mathrm { CO } _ { 2 } }$ l .

Question

Quizplus · Accepted Answer

The primary factor for increased ventilation during exercise is not increased arterial $ \mathrm{P}_{\mathrm{CO}_2} $, but rather neural and chemical signals, including increased CO2 production and decreased pH, that stimulate the respiratory centers.

The Primary Factor Believed to Be Responsible for Stimulating the Profound