, it is the main coordinating centre of the body which enabled and organised to think and take decision. it is divided into 3 parts: forebrain, midbrain, and hindbrain. brain and spinal cord constitute the central nervous system.Forebrain: it is the largest and the main thinking part of the brain which we should cancel impulses from various receptors.it comprises of three main partscerebrum, olfactory,DiencephalonMid brain: it is a part of the brain which connects forebrain to the Hind brain. it control the movement of head, neck and trunk to locate sounds and visual reflexes that are involved in focusing the objects.Hindbrain: it provides connection between spinal cord and rest of the brain. it consists of three parts as given below:cerebellum,pons,medulla oblongata