{HEAD ~ The peripheral walls} of the funnel meet the vessel walls at an oblique angle and channel fluid and {TAIL ~ debris} flowing proximally into the funnel to efflux ports at the base of the funnel 
channel
{ HEAD ~ The peripheral walls } of the funnel meet the vessel walls at an oblique angle and channel fluid and { TAIL ~ debris } flowing proximally into the funnel to efflux ports at the base of the funnel
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH