Tsarin kwakwalwa shine bangaren kwakwalwar da ke hada kashin baya da kwakwalwa. Yana da alhakin yawancin ayyuka na atomatik na jiki, kamar numfashi, bugun zuciya, da hawan jini. Har ila yau, kwakwalwar kwakwalwa ta ƙunshi cibiyoyi daban-daban waɗanda ke kula da ayyuka masu mahimmanci kamar su barci, hankali, da sarrafa hankula.
