Question

Vasa efferentia leads from
A) Rete testis to vas deferens
B) Vas deferens to epididymis
C) Epididymis of urethra
D) Testicular lobules to rete testis

Answer 1

Hint:Vasa efferentia or the efferent ducts are responsible for connecting the rete testis with the epididymis initial section.

Complete answer:
Male sex accessory ducts are inclusive of different structures such as vasa efferentia, rete testis, vas deferens, and epididymis.
Option A: The seminiferous tubules of the testis open itself into the vasa efferentia. This opening passes through the rete testis. The vasa efferentia then leaves the testis and opens up into the epididymis which is located close to the posterior surface of each of the testis. This epididymis further leads in the direction of the vas deferens that seems to ascend down the abdomen and loops present over the urinary bladder. Therefore, this is the correct option.
Option B: Vasa efferentia leads from rete testis to vas deferens and not vas deferens to epididymis. Therefore, this is the incorrect option.
Option C: Vasa efferentia leads from rete testis to vas deferens and not epididymis of urethra. Therefore, this is the incorrect option.
Option D: Vasa efferentia leads from rete testis to vas deferens and not testicular lobules to rete testis. Therefore, this is the incorrect option.

Thus, the correct option is (A) Rete testis to vas deferens.

Note:The vasa efferentia helps in transportation of spermatozoa from rete testis to epididymis. It also helps in reabsorption of luminal fluid leading to increase in concentration of sperms.