HUMAN ANATOMY AND PHYSIOLOGY

 The divisions of Nervous System ::

Anatomically the nervous system is divided into two main systems :

(1) Central nervous system (CNS) and 

(2) peripheral nervous system (PNS) 

The CNS consists of the brain and the spinal cord while the peripheral nervous system consists of cranio-spinal nerves having 12 pairs of cranial nerves and 31 pairs of spinal nerves 

            From the functional point of view the nervous system is divided into 

(1) Somatic or Voluntary nervous system and 

(2) A utonomic or visceral or involuntary nervous system (ANS)