Kuyo yonke le minyaka, isibhedlela siye ngokwesiko sakha indawo yokuhlinzwa yokulondolozwa kwezitho zamathambo, amaphaphu, amabele, izinso. Izinketho eziningi zoqobo zemisebenzi ku-esophagus, izitho zesizinda se-pancreatoduodenal, i-larynx ne-pharynx zenziwe futhi zasebenza. Ukudluliselwa okuzenzakalelayo kwezicubu zesiguli kusetshenziswa kabanzi ukuvala iziphene ezinkulu, ukufaka izingcezwana ezisusiwe noma amathambo aphelele, nokubuyiselwa kweplasitiki kumongo we-mammary.