{HEAD ~ The proximal portion} is located proximally of {TAIL ~ the distal portion}, and a junction member is preferably located between both portions 
is located proximally of
{ HEAD ~ The proximal portion } is located proximally of { TAIL ~ the distal portion } , and a junction member is preferably located between both portions
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH