Which of the following blood levels normally provides the primary stimulus for breathing?
A) pH
B) Oxygen
C) Bicarbonate
D) Carbon dioxide

Question

Quizplus · Accepted Answer

Carbon dioxide (CO₂)level provides the primary stimulus to breathe.High CO₂ levels stimulate breathing to eliminate the excess CO₂.A secondary,although important,drive to breathe is hypoxemia.Low blood O₂ levels stimulate breathing to bring more oxygen into the lungs.

Which of the Following Blood Levels Normally Provides the Primary