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peripheral nervous system

pars peripherica

A major division of the nervous system that contains nerves which connect the central nervous system (CNS) with sensory organs, other organs, muscles, blood vessels and glands.

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Typ Muscle
Körpersystem Nervous
Lateinischer Name pars peripherica
FMA ID 9903

Frequently Asked Questions

What is the peripheral nervous system and what does it include?

The peripheral nervous system (PNS) encompasses all neural tissue outside the brain and spinal cord. It includes cranial nerves (12 pairs), spinal nerves (31 pairs), ganglia, and sensory receptors, and is divided into somatic and autonomic divisions.

How does the PNS differ from the central nervous system?

The central nervous system (CNS) consists of the brain and spinal cord, which process and integrate information. The PNS connects the CNS to the rest of the body, transmitting sensory signals inward (afferent) and motor commands outward (efferent).

Can peripheral nerves regenerate after injury?

Unlike CNS neurons, peripheral nerves have significant regenerative capacity. Schwann cells in the PNS create a regenerative environment, and severed axons can regrow along the preserved myelin sheaths at approximately 1-3 mm per day, enabling partial or complete functional recovery.

References

  1. Foundational Model of Anatomy — FMA:9903 Reference anatomy ontology (University of Washington)
  2. UBERON — UBERON:0000010 Cross-species anatomy ontology (EMBL-EBI Ontology Lookup Service)

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Educational Disclaimer

This content is for educational and informational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider for medical decisions.

Data sources: Terminologia Anatomica, Foundational Model of Anatomy, Wikidata.