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Peripheral Nervous System - Histology (view source)
Revision as of 18:15, 23 October 2011
, 18:15, 23 October 2011→Dorsal Root Ganglion
In some of the cell bodies it is possible to distinguish a faint ring which represents the centrally located axon. The cell bodies themselves are spherical and have retained a pale staining and in some there is an intensely stained nucleus. Surrounding these cell bodies are ''Satellite cells'' that appear to be continuous with the Schwann cells surrounding the nerve. These satellite cells often appear to be clustered and are much smaller than the cell bodies.
In some of the cell bodies it is possible to distinguish a faint ring which represents the centrally located axon. The cell bodies themselves are spherical and have retained a pale staining and in some there is an intensely stained nucleus. Surrounding these cell bodies are ''Satellite cells'' that appear to be continuous with the Schwann cells surrounding the nerve. These satellite cells often appear to be clustered and are much smaller than the cell bodies.
===Dorsal Root Ganglion===
===Dorsal Root Ganglion Cross-section===
[[Image:WIKIVETdorsalrootganglion.jpg|thumb|right|150px|Dorsal Root Ganglion - Copyright John Bredl]]
[[Image:WIKIVETdorsalrootganglion.jpg|thumb|right|150px|Dorsal Root Ganglion - Copyright John Bredl]]
This cross-sectional view undertaken with H&E displays a number of characteristics of a dorsal root ganglion. The outer aspect of the ganglion shows the surrounding connective tissue of the epineurium within which a blood vessel is clearly visible. Outer adipose cells/tissue is also faintly visible to the top-right of the image.
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Within the ganglion two distinct nerve bundles can be seen which are surrounded by the perineurium. The nerve bundle to the left of the image displays many similarities to that of the higher magnification cross-sectional image above (lipid stain image). At this magnification, individual nerves can be differentiated, although no specific details can be seen. The nerve bundle to the right contains similar nerve structures but also cell bodies and surrounding satellite cells that are very similar to the image above.