Document Detail

Reexamination of the morphology of the extratesticular rete and ductuli efferentes in the goat.
MedLine Citation:
PMID:  1605378     Owner:  NLM     Status:  MEDLINE    
The morphology of the extratesticular rete and ductuli efferentes was reexamined in serial cross sections collected from the entire mass of the efferent ductules and in longitudinal sections collected from the partially unraveled efferent ductules. The extratesticular rete forms a 3-4-mm-long sac-like dilatation, which, within the head of the epididymis, has a wide lumen (up to 4 mm) and gives off along its length numerous evaginations, which, in turn, make connections with the ductuli efferentes. The latter is a mass of 16-18 ductules lined by three types of nonciliated cells: type II cells are characterized by dense, periodic acid-Schiff (PAS)-positive granules; type III cells are characterized by empty-appearing, PAS-negative vacuoles; and type I cells lack both granules and vacuoles. The distribution of the three types of nonciliated cells varies along the length. Whereas only type I cells are present in the beginning portion of the efferent ductule, type II cells predominate in the middle portion and type III cells in the distal portion (near the epididymis). The transition from one cell type to the other type is gradual; thus there are short segments along the length that share characteristics first for type I and type II cells and then for type II and type III cells. These results demonstrate that different nonciliated cell types are not randomly distributed in the epithelium of the ductuli efferentes but, instead, gradually differentiate from type I to type II to type III cells along the length of each efferent ductule. Factors controlling this differentiation remain to be studied.
H O Goyal; V Hutto; D D Robinson
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, Non-P.H.S.; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  The Anatomical record     Volume:  233     ISSN:  0003-276X     ISO Abbreviation:  Anat. Rec.     Publication Date:  1992 May 
Date Detail:
Created Date:  1992-07-13     Completed Date:  1992-07-13     Revised Date:  2007-11-14    
Medline Journal Info:
Nlm Unique ID:  0370540     Medline TA:  Anat Rec     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  53-60     Citation Subset:  IM    
Department of Anatomy, School of Veterinary Medicine, Tuskegee University, Alabama 36088.
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MeSH Terms
Goats / anatomy & histology*
Rete Testis / anatomy & histology*,  cytology
Vas Deferens / anatomy & histology*,  cytology
Grant Support
1G12RR03059-01A/RR/NCRR NIH HHS; S06-RR08091-18/RR/NCRR NIH HHS

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