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Here you go students an easy way to memories parts of your brain ,its basic structure . The  CNS   ( central nervous system ) is comprises of the brain and the spinal cord. The  PNS   ( peripheral nervous system ) comprises of  the spinal nerves that branch from the spinal cord and cranial nerves that branch from the brain. The brain have three parts  cerebrum :  composed of right and left hemispheres. It performs functions like interpreting touch, vision and hearing, as well as speech, reasoning, emotions, learning, and fine control of movement. cerebellum :  function is to coordinate muscle movements, maintain posture, &balance. brainstem  : connecting the cerebrum and cerebellum to the spinal cord. It performs many automatic functions such as breathing, heart rate, body temperature, wake and sleep cycles, digestion, sneezing, coughing, vomiting, and swallowing. The cerebrum is divided into four lobes:  frontal ,  parietal ,...