The central nervous system and the peripheral nervous system

Includes the brain and spinal cord

Consists of 12 pairs of cranial nerves and 31 pairs of spinal nerves.

Sends impulses from the cranial nerves and to the brain.

The coordination and control centre for humans

Cerebrum, hypothalamus, cerebellum, medulla oblongata and pituitary gland

The largest and most complex structure present in the frontal part of the brain

Maintains body balance and coordination of muscle contraction for body movement

Coordinating homeostasis and control centre that regulates body temperature, water balance, blood pressure and senses hunger, thirst and fatigue.