The nervous system breaks down into the central nervous system or CNS and the peripheral nervous system or PNS. The CNS contains the brain and spinal cord. The PNS contains the cranial nerves, spinal nerves and peripheral nerves.
The PNS breaks down into the sensory division or afferent pathway and the motor division or efferent pathway. The sensory division brings information in. The motor division sends information out. The motor division breaks down into the Autonomic nervous system and the somatic nervous system or voluntary section. The autonomic breaks down into the sympathetic division and the parasympathetic division.
The Somatic controls the skeletal muscles. The autonomic controls smooth muscle, cardiac muscle, and glands.
The sensory division is the sense it division. When you use your senses you are using this division. The motor division is the response team. It sends a response to your muscles and glands to respond to what you sense.
The spinal cord is the major connector between the PNS and the CNS.
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