Kalmar "micturition reflex" tana nufin reflex na son rai wanda ke fara aikin fitsari ko tsarin zubar da mafitsara. Wannan reflex ana daidaita shi ta hanyar tsarin jin tsoro kuma ya haɗa da raguwar tsokar mafitsara (tsohuwar tsoka) da kuma shakatawa na sphincters na fitsari don ba da damar fitsari ya fita daga cikin jiki. Ana iya yin tasiri ga micturition reflex da abubuwa daban-daban, kamar ƙarar fitsari a cikin mafitsara, ƙarfin tsokar mafitsara, da sigina daga ƙwaƙwalwa.