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Afferent nerve endings in the urinary bladder of the cat

✍ Scribed by Fletcher, Thomas F. ;Bradley, William E.

Publisher
Wiley (John Wiley & Sons)
Year
1970
Tongue
English
Weight
848 KB
Volume
128
Category
Article
ISSN
0002-9106

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✦ Synopsis

Abstract

In five cats, sacral dorsal rhizotomies were performed, alone or in conjunction with sympathetic nerve transections. Urinary bladders, collected 7, 10, or 30 days following the nerve transections, were sectioned and stained by the Holmes silver nitrate and the Nauta and Gygax methods and examined under the light microscope. Degenerative changes occurred in bladders of all the cats permitting an assessment of the appearance and distribution of vesical sensory endings. Degenerated myelinated axons and nerve terminals were found bilaterally in bladders, although they were more numerous ipsilateral to the transections. Within the muscle coat, degenerated endings were found in the perifascicular connective tissue, and less frequently, on the surface of muscle fascicles; endings were not seen among the muscle cells within a fascicle. Sensory endings were identified in the subserosa and lamina propria but not in transitional epithelium. Except for an occasional Paccinian corpuscle, encapsulated endings were not found. Afferent endings in the bladder appeared to be non‐encapsulated and without terminal fiber modifications.

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