Izihluzi zokungenisa umoya ziza ngokwemilo eyahlukeneyo kunye nobukhulu, ngokuxhomekeke kwiimfuno zenjini.Zenziwe ngezinto ezahlukahlukeneyo, kuquka iphepha, ugwebu, nomqhaphu, yaye nganye kuzo ineengenelo zayo ezikhethekileyo kunye neengxaki zayo.Izihluzi zephepha zezona zixhaphakileyo kwaye zifikelelekayo uhlobo lwesihluzo, kodwa zifuna ukutshintshwa rhoqo kunezinye iindidi.Izihluzi zogwebu ziyaphinda zisetyenziswe kwaye zinokuhlanjwa ziphinde zifakwe i-oyile, kodwa zisenokungahluzi ngokufanelekileyo njengezihluzo zephepha.Izihluzi zomqhaphu zibonelela ngohluzo olukumgangatho ophezulu kwaye ziyahlambeka kwaye ziphinde zisetyenziswe, kodwa zikwazezona zibiza kakhulu.