{TAIL ~ The bladder} is adapted to apply {HEAD ~ a pressure} substantially perpendicular to the cavity wall 
{ TAIL ~ The bladder } is adapted to apply { HEAD ~ a pressure } substantially perpendicular to the cavity wall
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH