When you hold your breath, which of the following blood gas changes first leads to the urge to breathe?
A)rising O2
B)falling O2
C)rising CO2
D)falling CO2
E)rising CO2 and falling O2

Name: When you hold your breath, which of the following blood gas changes first leads to the urge to breathe? A)rising O2 B)falling O2 C)rising CO2 D)falling CO2 E)rising CO2 and falling O2
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Question

Quizplus · Accepted Answer

The urge to breathe is primarily triggered by rising levels of CO2 in the blood, which is detected by chemoreceptors.

When You Hold Your Breath, Which of the Following Blood