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Question
The respiratory centre in brain is stimulated by
The respiratory centre in brain is stimulated by
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Solution
The correct option is A CO2 concentration in a arterial blood
In healthy individuals, the respiratory center in brain is stimulated by the presence of elevated carbon dioxide levels in the arterial blood. The respiratory center responds in order to signal the respiratory muscles to breathe. Special chemical receptors present near the carotid arteries and aortic arteries are responsible for detecting decrease in blood pH, increase in CO2 levels. When these carotid and aortic bodies detect low oxygen level, they stimulate the respiratory center in brain to increase the rate and depth of breathing.Thus, the correct answer is option D.
In healthy individuals, the respiratory center in brain is stimulated by the presence of elevated carbon dioxide levels in the arterial blood. The respiratory center responds in order to signal the respiratory muscles to breathe. Special chemical receptors present near the carotid arteries and aortic arteries are responsible for detecting decrease in blood pH, increase in CO2 levels. When these carotid and aortic bodies detect low oxygen level, they stimulate the respiratory center in brain to increase the rate and depth of breathing.
Thus, the correct answer is option D.
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