Peripheral nervous system

The peripheral nervous system or PNS, is part of the nervous system, and consists of the nerves and neurons that reside or extend outside the central nervous system--to serve the limbs and organs, for example. Unlike the central nervous system however, the PNS is not protected by bone or the blood-brain barrier, leaving it exposed to toxins and mechanical injuries. The peripheral nervous system is divided into the somatic nervous system and the autonomic nervous system.

Related Topics:
Nervous system - Nerve - Neuron - Central nervous system - Blood-brain barrier - Somatic nervous system - Autonomic nervous system

~ ~ ~ ~ ~ ~ ~ ~ ~ ~