The syringe includes a plunger which slides within {TAIL ~ an open, cylindrical passage} in {HEAD ~ a cylinder} 
The syringe includes a plunger which slides within { TAIL ~ an open , cylindrical passage } in { HEAD ~ a cylinder }
OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD