The 'apneustic center' of the lower
pons appears to promote
inspiration by stimulation of the ''I'' neurons in the
medulla oblongata providing a constant stimulus.
The apneustic centre of pons sends signals to the dorsal respiratory centre in the medulla to delay the 'switch off' signal of the inspiratory ramp provided by the
pneumotaxic centre of pons. It controls the the intensity of breathing.
External links
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Description at vcu.edu
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Diagram at colorado.edu