He taputapu rewharewha tae atu ki te huinga urutau me te huinga catheter.Kei roto i te huihuinga urutau te whakamaarama, te manawa, te uru, me nga tauranga rere.Kei roto i te tauranga urunga he awa e tautuhi ana i tetahi huarahi.Ka puta mai te tauranga rewharewha mai i te awaawa, ka tuwhera ki te huarahi i tetahi putanga.Kei roto i te kohinga ngongo he ngongo kua whakahiato ki tetahi taputapu.