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Peripheral Nervous System - Histology (view source)
Revision as of 17:13, 23 October 2011
, 17:13, 23 October 2011no edit summary
==Introduction==
==Introduction==
Nerves of the peripheral nervous system (PNS) are composed of numerous bundles of nerve fibers that are surrounded by connective tissue. This connective tissue also contains a specific layer that is specialised to neurons; the '''peri-neurium'''.
Nerves of the peripheral nervous system (PNS) are composed of numerous bundles of nerve fibers that are surrounded by connective tissue. This connective tissue also contains a specific layer that is specialised to neurons; the ''peri-neurium''. The outer layer of this connective tissue is called the ''epineurium''; which surrounds both the perineurium and the nerve itself. Individual neurons found within each bundle are surrounded by the ''endoneurium''.
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Each nerve fibre that is visible on histologic section represents an axon which is surrounded by the ''neurilemma'' or as it is also known, the sheath of a ''Schwann cell''.
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The information included on the page below is specifically to provide an insight into the histologic appearance of nerves within the PNS. Therefore knowledge of the terminology related to the anatomy and physiology of nerves is assumed and the [[PNS_Structure_-_Anatomy_%26_Physiology|PNS anatomy and physiology]] page should be reviewed to improve the understanding of the information provided below.
===Histology of Myelinated Nerves===
===Histology of Myelinated Nerves===