The urge to inhale in humans results from

Rising

P C O_{2}

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Rising

P O_{2}

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Falling

P C O_{2}

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Falling

P O_{2}

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Solution

The correct option is A Rising $P C O_{2}$
The presence of elevated carbon dioxide levels in the blood is the stimulant that the respiratory centre responds to, in order to signal the respiratory muscles to breathe. Chemoreceptors found in carotid bodies and aortic bodies are responsible for detecting a decrease in blood pH by rising $P C O_{2}$ .

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Similar questions

What will be the pO₂ and pCO₂ in the atmospheric air compared to those in the alveolar air?

(i) pO₂ lesser, pCO₂ higher

(ii) pO₂ higher, pCO₂ lesser

(iii) pO₂ higher, pCO₂ higher

(iv) pO₂ lesser, pCO₂ lesser

C O_{2}

$C O_{2}$ dissociates from carbamino haemoglobin when

(a) $p C O_{2}$ is high and $p O_{2}$ is low

(b) $p O_{2}$ is high and $p C O_{2}$ is low

(d) None of the above

P o_{2}

P c o_{2}

P O_{2}

P C O_{2}

P C O_{2}

P O_{2}

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