It is uncertain how the intrinsic rhythmicity of respiration arises
The brainstem has different respiratory centres.
Neurons located in pons and medulla control rhythmic nature of inspiration and expiration.
Other parts of brainstem involved
- Medullary respiratory centre
- - Rhythm generator??
- - Dorsal area respiratory group (inspiration) (at back)
- - Ventral area respiratory group (mainly expiration) (front)
Apneustic centre / Pneumotaxic centre
Cortex can overide / modify
brainstem -> voluntary control / emotion (limbic system)