Peripheral nervous system
From The Art and Popular Culture Encyclopedia
The peripheral nervous system, or PNS, consists of the nerves and ganglia outside of the brain and the spinal cord. The main function of the PNS is to connect the central nervous system (CNS) to the limb and organ. Unlike the CNS, the PNS is not protected by bone or by 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; some textbooks also include sensory systems.
- Spinal nerves
- Cranial nerves
- Autonomic nervous system
- Connective tissue in the peripheral nervous system