SISTEMAI LIMBI majmui shubahoi magzi sarro guyand, ki asosan dar sathi darunii nimkurahoi kalon joygir shudaand. Sistemai limbi dar tanzimi funksiyai uzvhoi daruni, shomma, raftori instinktivi, hayajoni ruhi (emosiya), khotir, khob, bedori va gayra ishtirok mekunad.