[Microscopic innervation of the spermatic ducts and the testis. III: Tubuli seminiferi recti, rete testis and ductuli efferentes testis].
The cholinesterase activity and ultrastructural characteristics of the nerves in tubuli seminiferi recti, rete testis and ductuli efferentes testis have been studied in Wistar rats. The tubuli seminiferi recti and rete testis are innervated by a dense network which has varicosities containing different types of synaptic vesicles. The nerve fibres are located between the smooth muscle cells and the fibroblasts, and under the epithelial basement membrane. Inside the ductuli efferentes testis, the nerves form perivascular, subepithelial and muscle plexuses. According to the positive reaction for cholinesterase as well as the characteristics of the synaptic vesicles, these structure have at least a double adrenergic-cholinergic innervation. Our results demonstrate that the nervous fibres in ductuli efferentes testis are more abundant than in tubuli seminiferi recti and rete testis. The role of the vegetative nervous system in the initial segments of the spermatic pathways is discussed.
Suárez Garnacho
S
S
Vega
J A
JA
Alvarez Arenal
A
A
Pérez Casas
A
A
D000818:Animals; D008297:Male; D008854:Microscopy, Electron; D051381:Rats; D011919:Rats, Inbred Strains; D012152:Rete Testis / Q000294:innervation* / Q000648:ultrastructure; D012671:Seminiferous Tubules / Q000294:innervation* / Q000648:ultrastructure; D013737:Testis / Q000294:innervation*
Inervación microscópica de las vías espermáticas y testículo. III: Tubuli seminiferi recti, rete testis y ductuli efferentes testis.