Publication: The three-dimensional architecture of the myosalpinx in the rat (Rattus norvegicus) as revealed by scanning electron microscopy
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Date
1996
Authors
Muglia, U. ; Vizza, E. ; Correr, S. ; Germaná, G. ; Motta, P.M.
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Publisher
Murcia : F. Hernández
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DOI
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info:eu-repo/semantics/article
Description
Abstract
The three-dimensional (3-D) architecture of
myosalpinx in the rat has been investigated by means of
scanning electron microscopy after microdissection and
removing interstitial connective tissue with 6N NaOH
digestion. In the extramural portion of tube-uterine
junction the myosalpinx shows circularly arranged fibers
originating from the uterus, together with oblique fibers
typical for the salpinx, which occur more frequently in
the deeper layers. As fibers approach the mucous folds
they assume a plexiform arrangement, which is
maintained through all tubal segments. In the isthmus
surface fibers form wide muscle rings around the elbow
of loops, peculiar to the rat tubal morphology. Surface
fibers in the ampulla and pre-ampulla have an even
circular course. Our 3-D results reveal that the muscular
architecture of rat tube is mainly organized in concentric,
monolayered shells with a plexiform arrangement tightly
fastened together. Functionally, this muscular
arrangement seems to be capable of stirring rather than
pushing the embryo and gametes. Finally, such a
plexiform network might work as a mechanism of (<tube
locking,, in proximity of isthmic loops as well as at the
level of the ampullary-isthmic junction.
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