AIIMS2014Botany-Human Physiology
AIIMS 2014 Botany Human Physiology MCQ Question
Type: MCQ-conceptual-Medium
A person sitting at rest experiences a temporary cessation of breathing after forced deep breathing for a few minutes. This is due to
A
too much in the blood
B
too much in the blood
C
very little in the blood
D
both high and very little in the blood
Correct Answer
Option D
Detailed Explanation
The correct answer relates to the concept of respiratory control and the role of carbon dioxide (CO2) levels in the blood. After forced deep breathing, the body can experience a temporary drop in CO2 levels, leading to a condition called respiratory alkalosis. This decrease in CO2 can trigger a reflex that temporarily inhibits the urge to breathe, resulting in a cessation of breathing until CO2 levels normalize.
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