compared with the control state , transection of the upper and middle part of the pons varolii and transection at the level of the pontomedullary junction reduced the respiration rate ( p less than 0.001 ) , increased the duration of inspiration and expiration ( p less than 0.001 , transection 10 mm rostrally to the obex ) and gave rise to apneustic breathing ( 8 mm ) , or to tonic , respiration-modulated activity of the phrenic nerve and diaphragm ( 6 mm ) .
C0231800
expiration
C0035203
respiration