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 intensity of breathing. The apneustic centre is inhibited by pulmonary strech receptors. However, it gives positive impulses to the inspiratory (I) neurons.
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