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Q.
Select the set of medullary respiratory centers in Brain?
NTA AbhyasNTA Abhyas 2020Breathing and Exchange of Gases
Solution:
Regulation of Respiration
- Neural system maintains respiratory rhythm of body according to the body needs via following parts of brain :
$1.$ Medulla : It possess :
$A.$ Respiratory rhythm centre - It is primarily responsible for regulation of respiratory rhythm.
$B.$ Chemosensitive area - It is situated adjacent to the Respiratory rhythm centre. Increase in $CO_{2}$ and $H^{+}$ concentration $ \rightarrow $ Stimulation of Chemosensitive area $ \rightarrow $ Sends signal to the Respiratory rhythm centre to make necessary changes in the respiratory process for the elimination of these substances.
$2.$ Pons: It possess pneumotaxic centre, that moderates the functions of the respiratory rhythm centre. Stimulation of this centre alters the respiratory rate by reducing the duration of inspiration.