Tsarin coronoid na mandible tsinkaya ce ta kashi wanda ke kan ɓangaren gaba na babba (ƙananan muƙamuƙi). Ana kiranta da kamanni da kambi ko "corona" kuma siffarsa yawanci triangular. Tsarin coronoid yana aiki azaman wurin haɗin gwiwa don mahimman tsokoki da yawa waɗanda ke da hannu wajen tauna, gami da tsokar ɗan lokaci. Yana taka muhimmiyar rawa wajen bude baki da rufe baki, da ma sauran motsi kamar cizo da nika.