Which centers located in the pons regulate the depth and rate of respiration?

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Pontine centers fine-tune breathing by adjusting both depth and rate. The apneustic center, located in the lower pons, promotes deep, prolonged inspiration by stimulating the inspiratory neurons in the medulla. The pneumotaxic center, in the upper pons, provides inhibitory input that ends inspiration and helps regulate the breathing rate, effectively braking inspiration to prevent over-inflation. Together, these two centers modulate the basic rhythm set by medullary centers (the dorsal respiratory group mainly drives quiet inspiration, while the ventral respiratory group handles forced breathing), and they respond to chemoreceptor input to match metabolic needs.