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Physiology

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Respiration

Question
24 out of 33
 

Basic respiratory rhythm centre is present in-



A dorsal medulla
B ventral medulla

C rostroventrolateral medulla
D Pons

Ans. A dorsal medulla

I. MEDULLA – has pre botzinger complex (in dorsal part) which acts as pacemaker for spontaneous respiration, also contains DRG & VRG(DORSAL &VENTRAL RESPIRATORY GROUP OF NEURONS)

a. DRG - contains inspiratory neurons which supply inspiratory muscles

b. VRG - both inspiratory & expiratory neurons

II. PONS – contain 2 centres

a. Apneustic centre (in lower pons) : stimulates inspiratory neurons. If not inhibited by vagus and pneumotaxic centre will cause apneusis.

b. Pneumotaxic centre (in upper pons) : inhibit apneustic centre.

Respiration Flashcard List

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