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Male Reproductive System

Differentiate...

Question

Differentiate between :
Vas deferens and vasa efferentia

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Solution

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.

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Q. (a) Draw a labelled diagrammatic view of human male reproductive system.
(b) Differentiate between:
(i) Vas deferens and vasa efferentia
(ii) Spermatogenesis and spermiogenesis

Q. Sperms are transported to vas deferens from vasa efferentia through_________.

Q. Select the incorrect route(s) for the passage of sperm in the respective organisms :
I. Periplaneta americana: Testes → Vasa efferentia → Kidney → Bidder’s canal →
Urinogenital duct → Cloaca
II. Rana tigrina: Testes → Vasa efferentia → Kidney → Bidder’s canal → Urinogenital
duct → Cloaca
III. Rana tigrina: Testes → Vas deferens → Seminal vesicle → Ejaculatory duct → Male
gonopore
IV. Periplaneta americana: Testes → Vas deferens → Seminal vesicle → Ejaculatory duct → Male gonopore

Q. Identify the correct passage of spermatozoa in the male human reproductive system.
(a) Vas deferens
(b) Epididymis
(c) Urethra
(d) Vasa efferentia
(e) Ejaculatory duct
(f) Seminiferous tubules.

Q. Read the following statemnets:
1) The male sex accessory ducts include rete testus, vasa efferentia, epididymis and vas deferens.
2) Fallopian tube, uterus and vagina constitute the female accessory ducts.
3) The part of the oviduct closer to the ovary is infundubulum
4) Isthumus shows a narrow lumen an it joins with the uterus.

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