Central nervous system
[[File:Central_nervous_system.svg}right|200px|thumb|Ii chhaapa CNS dekhae hae]] Central nervous system (CNS), nervous system ke sab se barraa hissa hae. CNS dui chij se banaa hae; dimaag aur riirr ke haddi (spinal chord). CNS, haddi se surakchhit karaa gais hae.