What is the Ductuli Efferentes?
The ductuli efferentes are a series of tubules that conduct sperm from the rete testis to the epididymis . These small ducts are unique because they are the only region of the male reproductive tract that is lined by a ciliated epithelium.
What is the function of efferent ductules?
The most important feature of the efferent ductule epithelium is its basic physiological function to reabsorb up to about 90% of the luminal fluids coming from the seminiferous tubules, including 50–90% of the luminal proteins (Clulow et al., 1998; Hess, 2002; Hansen et al., 2004).
Is Vasa Efferentia part of testis?
Efferent ductules connects the rete testis (the network of interconnecting tubules located in the hilum of the testicle) and the epididymis (Pic. 3). In humans there are approximately 15–20 efferent ducts, which also occupy nearly one third of the head of the epididymis (Pic.
What is the function of rete testis?
A network of small tubes in the testicle that helps move sperm cells (male reproductive cells) from the testicle to the epididymis.
Is Ductuli Efferentes and Vasa Efferentia same?
Ductuli efferentes is that part of vasa efferentia which lies inside testis and is hence part of intra testicular duct system.. while remaining part is simply called vasa efferentia, which is present outside testis, and hence a part of extra testicular duct system..
What is another name of efferent ductules?
The efferent ducts are often referred to as “conduits” because sperm travel so rapidly through these tubules into the epididymis.
What is the difference between efferent Ductules and Vasa Efferentia?
So, this is the key difference between vas deferens and vasa efferentia. Moreover, vas deferens is 30 cm long while vasa efferentia are 2 – 3 mm long. This is another difference between vas deferens and vasa efferentia. Vas deferens has only one tube while vasa efferentia has 15 to 20 efferent ducts on each side.
What is difference between vas deferens and vas Efferens?
Vasa efferentia arise from the rete testis and open into the epididymis and conduct spermatozoa out from the testis, whereas vas deferens is a partially coiled thick muscular tube arising from each epididymis. This tube conducts spermatozoa from the epididymis to the base of the urinary bladder.
What is Vasa Efferentia in biology?
Medical Definition of vasa efferentia : the 12 to 20 ductules that lead from the rete testis to the vas deferens and except near their commencement are greatly convoluted and form the compact head of the epididymis.
Why is the gubernaculum important?
A gelatinous tissue, the gubernaculum, pulls the testes through the abdomen, through the inguinal canal in the groin, and down into the scrotum. The pulling action occurs as the gubernaculum is stimulated first to grow and then to shrink.
What is difference between vas deferens and Vasa Efferentia?
What are the ductuli efferentes of the testis?
ductuli efferentes – In the testis (male gonad) series of tubular structures which arise from the rete testis and conduct spermatazoa into the ductus epididymidis.
Where do the ductuli efferentes come from?
The ductuli efferentes emerge from the dorso-superior margin of each testis. They originate from the rete testis and gradually fuse to form the ductus epididymis.
What are the efferent ducts?
Efferent ducts. The efferent ducts (or efferent ductules or ductuli efferentes or ductus efferentes or vasa efferentia) connect the rete testis with the initial section of the epididymis. There are two basic designs for efferent ductule structure: a) multiple entries into the epididymis, as seen in most large mammals.
When do efferent ductules develop in human embryos?
In the human, the anlage of the efferent ductules first appears in embryos 13-17 mm long (6th glomeruli and mesonephric tubules (Krutsiak and Kumka, 1988). A lumen is formed during the 8th week of development. At 20-28 weeks, the mesonephric tubules enlarge to form the ductules and head