The three-dimensional architecture of the myosalpinx in the rat (Rattus norvegicus) as revealed by scanning electron microscopy

U. Muglia, E. Vizza, S. Correr, G. Germane, P. M. Motta

Research output: Contribution to journalArticle

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.

Original languageEnglish
Pages (from-to)873-880
Number of pages8
JournalHistology and Histopathology
Volume11
Issue number4
Publication statusPublished - 1996

Keywords

  • ovum transport
  • rat
  • Rattus norvegicus
  • salpinx
  • scanning electron microscope
  • smooth muscle cells

ASJC Scopus subject areas

  • Cell Biology
  • Anatomy
  • Histology
  • Pathology and Forensic Medicine

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