Structure and function of the ductuli efferentes: A review

  title={Structure and function of the ductuli efferentes: A review},
  author={Kenneth Yerro Ilio and Rex A. Hess},
  journal={Microscopy Research and Technique},
  • K. Ilio, R. Hess
  • Published 15 December 1994
  • Biology
  • Microscopy Research and Technique
An image sensor capable of implementing a global shutter mode and a rolling shutter mode is provided. [] Key Method The row driver performs decoding for a reset operation, a transfer operation and a read operation, and generates control signals.
The Efferent Ductules: Structure and Functions
It was discovered that estrogens play a major role in the regulation of efferent ductule function, and that estrogen receptors are expressed in this region of the male tract to an extent that exceeds even the female reproductive tract.
Excurrent duct system of the male turtle Chrysemys picta
The epididymis and efferent duct system of the turtle Chrysemys picta were examined. Seminiferous tubules are drained by a series of ducts that form a rete exterior to the tunica albuginea. The rete
The morphology of the efferent ducts of the testis of the ostrich, a primitive bird
The PED epithelium displays the type II non-ciliated cell whose poorly developed subapical endocytic apparatus as well as the absence of dilated basal intercellular spaces indicate its limited fluid absorptive capacity.
Morphological Changes of the Epididymis and Description of the Excurrent Ducts of Phrynops geoffroanus (Testudines: Chelidae) During the Reproductive Cycle
The seminal ducts in adults of Phrynops geoffroanus were examined using light microscopy, and spermatozoa were stored in the epididymis, and deferent ducts were found.
Proximal Testicular Ducts of the Mediterranean Gecko (Hemidactylus turcicus)
The efferent ducts of the Mediterranean Gecko, Hemidactylus turcicus (Gekkonidae) were investigated using light and electron microscopy and the presence of small clear vesicles and widened intercellular canaliculi suggest that cells of the rete testis are responsible for intake of luminal fluids.
The Structural Organization and Functions of the Epithelium of the Vas Deferens
The vas deferens is the least understood and studied organ of the male reproductive system and must play a role in the viability and protection of sperm from reactive oxygen species, proteases and complement during their storage.
Oestrogen in fluid transport in efferent ducts of the male reproductive tract.
  • R. Hess
  • Biology, Medicine
    Reviews of reproduction
  • 2000
Although the separate roles for oestrogens and androgens in the regulation of fluid reabsorption are controversial and remain to be resolved, it is now established that loss of oestrogen receptor function in males interferes with the resorptive function of efferent ductules, a function that is essential for fertility.
The Testicular Excurrent Duct System: An Historical Outlook
John Hunter made a retrograde injection of mercury from the human (and other animals) vas deferens into the epididymis and showed that the epididsymis was a single, long coiled tubule, although like other physicians/ scientists of his time, this observation was based more on intuition than on experimental facts.


Structural differentiation and fluid reabsorption in the ductuli efferentes testis of the rat.
It was concluded that transport in vesicles and vacuoles could not account for the rate of fluid reabsorption and that the main mechanism of transport probably involves the coupling of water and active salt transport.
On the basis of evidence available, it is assumed that a considerable volume of fluid is required to transfer mature sperm from their point of origin in the seminiferous tubules to the excurrent duct system, and that the ducts comprising the first portion of this system, especially the ductuli efferentes, absorb that portion of fluid which is not necessary for propulsion of the sperm mass through the ducting of the epididymis proper.
An Electron Microscopic Study of the Ductuli Efferentes and Rete Testis of the Guinea Pig
Findings are interpreted as suggesting that the continuity of the vacuolar system with elements of the endoplasmic reticulum represents a pathway for transfer of large quantities of fluid, an activity which has long been ascribed to the epithelium of the ductuli efferentes.
Organization of tubules in the human caput epididymidis and the ultrastructure of their epithelia.
This is the most detailed study so far of the epithelia and the tubule organization in the caput epididymidis of any species, and most of the results are reported for the first time for the human.
Regional variation in the surface morphology of the epithelium of the rat ductuli efferentes, ductus epididymidis and vas deferens
The luminal surface ofepithelial cells lining the ductuli efferentes, ductus epididymidis and first portion of the vas deferens were studied with the scanning electron microscope and it was shown that on non‐ciliated cells the short microvilli adhere to one another to form clumps of microVilli.
The ductuli efferentes of the goat: A morphological study
The morphology of the ductuli efferentes of the goat was compared with that of other animal species, especially with that of the bull. Both in the goat and in the bull, it forms a slightly brownish,
The structure of the epididymis, efferent ductules and ductus deferens of the guinea pig: A light microscope study
A detailed histological analysis of the characteristics of the epithelium in the seven zones of the guinea pig epididymis and in the efferent ductules and ductus deferens was undertaken to obtain a better understanding of structure‐function relationships in the epididmis of the Guinea pig.
Appendix epididymidis and aberrant ductules of the bull: light-microscopic and ultrastructural study.
  • H. Goyal
  • Biology, Medicine
    Acta anatomica
  • 1983
Although the vestigial organs and ductuli efferentes were similar in epithelial height and epithelial cell types, there were important morphological differences that were reliably used to differentiate between the two.
The Cast of the Excurrent Duct System in the Epididymis of the Cock
The present study was carried out to clarify the three dimentional architecture of the cock's excurrent duct system.
Structural differentiation of the male genital ducts of the echidna (Tachyglossus aculeatus).
Seven ductuli efferentes radiate from the testis of the echidna and join the ductus epididymidis either directly or after joining one of their neighbours, which appears to be structurally and functionally similar to the ductuli Efferentes of therian mammals.