Tamilnadu BoardEnglish MediumSTD 11Bio ZoologyRespiration3 Marks
Question
How is respiration regulated?
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Answer
A specialized respiratory center present in the medulla oblongata of the hindbrain called the respiratory rhythm center is responsible for this regulation. Pneumotaxic centre present in ponsvaroli region of the brain moderates the function of the respiratory rhythm centre to ensure normal breathing. The chemosensitive area found close to the rhythm center is highly sensitive to $CO _2$ and $H ^{+}$. And $H ^{+}$are eliminated out by the respiratory process. Receptors associated with the aortic arch and carotid artery send necessary signals to the rhythm center for remedial action. The role of $O _2$ is insignificant in the regulation of respiratory rhythm.
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