SCIENCE
RESPIRATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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O2
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CO2
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N2
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A mixture of all these
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Detailed explanation-1: -Thus, the correct answer is ‘CO2 level in blood. ‘
Detailed explanation-2: -If the various receptors in the body measure a high level of carbon dioxide (CO2) in the blood, the respiratory center increases the respiratory rate so that the excess CO2 in the alveoli can be released into the air we breathe. If, on the other hand, the CO2 concentration is too low, the respiratory rate is reduced.
Detailed explanation-3: -Three vital respiratory gases-oxygen (O(2)), nitric oxide (NO), and carbon dioxide (CO(2))-intersect at the level of the human red blood cell (RBC).
Detailed explanation-4: -The rate of breathing is mainly controlled by CO2 level in the blood. Excess CO2 stimulates the respiratory centre of the brain and increases the inspiratory and expiratory signals to the respiratory muscles.
Detailed explanation-5: -Under most conditions, the partial pressure of carbon dioxide (PCO2), or concentration of carbon dioxide, controls the respiratory rate. The peripheral chemoreceptors that detect changes in the levels of oxygen and carbon dioxide are located in the arterial aortic bodies and the carotid bodies.