Dictionary of Biological Psychology
peripheral nervous system
The organized NERVOUS SYSTEM beyond the CENTRAL NERVOUS SYSTEM (the BRAIN and SPINAL CORD).
The peripheral nervous system contains the CRANIAL NERVES and SPINAL NERVES; peripheral nerves (see PERIPHERAL NERVES AND SPINAL NERVES) and two major divisions: the AUTONOMIC NERVOUS SYSTEM (also known as the INVOLUNTARY NERVOUS SYSTEM), which further divides into the SYMPATHETIC NERVOUS SYSTEM and PARASYMPATHETIC NERVOUS SYSTEMS; and the SOMATIC NERVOUS SYSTEM (alternatively known as the VOLUNTARY NERVOUS SYSTEM).
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