Jijiyar jijiyar jini ce da ke gudana a cikin ɓangarorin ƙashin ƙashin ƙugu kuma tana fitar da jini daga al'aurar waje da maƙarƙashiya (yanki tsakanin al'aura da dubura). Yana daga cikin venous system na ƙashin ƙugu kuma yana da alhakin dawo da jini daga yankin ƙashin ƙugu zuwa zuciya.
