[Macroscopic study and structure of the nerve of the levator muscle of the anus]
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Y Makhlouf1, C Gagnard, D Prat
1Laboratoire d'Anatomie de Nîmes, Faculté de médecine Montpellier-Nîmes, Université de Montpellier I, France.
Bulletin De L'Association Des Anatomistes
|September 1, 1987
Abstract:
Beginning at the sacral plexus the nerve disposition can be found to follow two modalities: first disposition in 2/3 of all cases having a cranial nerve branch for the elevator portion and a caudal nerve branch for the sphincter portion; second disposition in 1/3 of all cases having a branch divided in its terminal part into 2 ramus branches, one for the elevator portion and one for the sphincter portion. On the average the nerve contains 539 fibers of which 73% are myelinated and 27% non myelinated. The fibrillar content is identical for both branches of either disposition.