an inflow liquid pump arranged to feed an irrigation liquid from {HEAD ~ a container} though a feed line into {TAIL ~ a body cavity}, 
an inflow liquid pump arranged to feed an irrigation liquid from { HEAD ~ a container } though a feed line into { TAIL ~ a body cavity } ,
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH