A teaching model 1, wherein {HEAD ~ at least some} of {TAIL ~ the members} are sufficiently transparent to see a bronchoscope tube if present within the members 
of
A teaching model 1 , wherein { HEAD ~ at least some } of { TAIL ~ the members } are sufficiently transparent to see a bronchoscope tube if present within the members
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH