Evacuation and collapse of {TAIL ~ the fluid bladders} 24, 26, or some other resilient feature of the end effector 14, causes {HEAD ~ the anvil} 12 to open 
Evacuation and collapse of { TAIL ~ the fluid bladders } 24 , 26 , or some other resilient feature of the end effector 14 , causes { HEAD ~ the anvil } 12 to open
OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH