Explain the role of the neural system in the regulation of respiration

Answers (1)

The Central Nervous system is important in respiration because:

  • The respiratory rhythm centre is present in the medulla. It is a specialised centre and is responsible for the regulation of respiration.
  • The pneumotaxic centre is present in the pons of the brain. It moderates the functions of the respiratory rhythm centre. Nerve signals present in pneumotaxic centre reduces the duration of inspiration thus altering the respiratory rate.
  • A chemosensitive area is also there adjacent to the rhythm centre. This is highly sensitive to CO2 and hydrogen ions. Increase in these substances can activate this centre.
  • The chemosensitive area gives a signal to the rhythm centre to make adjustments to eliminate these substances. There are receptors that are associated with the aortic arch and the carotid artery. They also recognise changes in CO2 and H+ concentration.
  • After that, they send necessary signals to the rhythm centre so that corrective actions can be taken. The role of oxygen is quite insignificant in the regulation of respiratory rhythm centre.

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