Question

5. (2pts) What are the respiratory centers within the central nervous system? Identify the stimulus that causes a response in each.

6. (3pts) In pathologic conditions where the alveolar membrane is thickened there is little effect on the exchange of carbon dioxide, but oxygen diffusion is impaired. Based on your understanding of the respiratory membrane function, propose an explanation for this phenomenon.

7. (2pts) Why is alveolar ventilation rate a more important phyisological measure of respiratory function than total air moved into the respiratory passages?

Answer 1

A specialised centre present in the medula region of the brain called respiratory rhythm centre is primarily responsible for this regulation and other centre present in the pons region of the brain card pneumotaxic centre can moderate the function of the respiratory rhythm centre neural signal from the centre can reduce the duration of the inspiration and thereby ulter the respiratory rate A chemosensitive area is situated adjacent to the rhythm centre which is highly sensitive to the the co2 and hydrogen ions increase in the same substance can active the centre which in turn can signal the reading centre to the to make the necessary adjustment in the respiratory process by which these substances can be eliminated. receptor associated with the aortic or and carotid artery also can recognise the change in the co2 and hydrogen ion concentration and send necessary signal to the rhythm centre for that remedial action the role of the oxygen in the regulation of the respiratory rhythm is quite significant.

Hence Medula and pons are the mejor brain centre that effect respiration.