Vasa Efferentia – Class 12 | Chapter – 3 | Biology Short Notes Series PDF

Vasa Efferentia: Vasa efferentia is the several highly convoluted tubules that lead from the rete testis to the vas deferens and form the head of the epididymis. The testis is the primary sex organ whose function is to produce sperms. It has ciliated epithelium to prevent these abnormal sperms from moving into the ejaculate.

Efferent ductules connects the rete testis (the network of interconnecting tubules located in the hilum of the testicle) and the epididymis. 

In humans there are approximately 15–20 efferent ducts, which also occupy nearly one third of the head of the epididymis. Near the rete testis the ductules are straight or slightly convulted, surrounded by epididymal ligament and fat and by a band of smooth muscle that helps to propel the sperms.

Functions of Vasa Efferentia

• Main function of Vasa Efferentia is to be part of the conduites for sperms, which make a pathway and help the transportation of sperms from rete testis to the epididymis (a tube that connects a testicle to a vas deferens) thanks to smooth muscle contraction.
• It helps in the reabosorption of luminal fluid, which leads to the increase of the concentration of sperm as they enter the epididymis. The epithelium has also secretory function, but it is little known about it.

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By Team Learning Mantras