This set of Human Anatomy Quiz focuses on “Ductus Deferens, Testes and their Coverings”.
1. If for some reason, the vasa efferentia in the human reproductive system gets blocked, the gametes will not be transported from _________
a) Testes to epididymis
b) Epididymis to vas deferens
c) Ovary to uterus
d) Vagina to uterus
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Explanation: Epididymis is a narrow tightly coiled tube connecting the rear of the testis to the deferent duct. It stores sperms for maturation.
2. Vasa efferentia are the ductules leading from ___________
a) Rete testis to vas deferens
b) Epididymis to urethra
c) Vas deferens to epididymis
d) Placenta
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Explanation: Rete testis is an anatomizing network of delicate tubules located in the hilum of the testicle that carries sperm from somniferous tubules to the efferent ducts.
3. Spermatogenesis is promoted by ___________
a) Estrogen
b) Progesterone
c) Testosterone
d) Oxytocin
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Explanation: Testosterone is the primary make sex hormone and an anabolic steroid. In male it lays a key role in development of male reproductive tissues. It also promotes secondary sexual character.
4. The ductus deferens is also known as ____________
a) Urethrea
b) Penis
c) Testis
d) Vas deferens
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Explanation: It is a part of the male reproductive system. Vas deferens transport sperm from epididymis to the ejaculatory ducts for the ejaculation.
5. In most mammals testes are located in scrotal sacs for _______
a) Sex differentiation
b) Sperm development in cooler condition
c) Independent functioning of kidney
d) More space to visceral organs
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Explanation: Testes are located outside the body because the sperm develop best at temperature several degree cooler than normal internal body temperature. They are located behind the penis in a pouch of skin called scrotum.
6. The head of epididymis at the head of testis is called ________
a) Cauda epididymis
b) Vas deferens
c) Caput epididymis
d) Gubernaculum
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Explanation: The head of epididymis receives spermatozoa via efferent ducts of mediastinum of the testis. It is characterized historically by a thin myoepithelium.
7. Testes are protected in scrotum because they _________
a) Produce heat
b) Produce sperms
c) Help in micturition
d) Control homeostasis
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Explanation: Sperm is the male reproductive cell. It has a limited life span. Human sperm cell is haploid.
8. Tunica alburginea is the covering of _____________
a) Testes
b) Liver
c) Spleen
d) Lungs
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Explanation: Tunica alburginea is a fibrous envelope. It consists of 5% elastin that is made up of amino acids glycine, valine, alanine and proline.
9. Nutritive cells found in seminiferous tubules are ____________
a) Sertoli cells
b) Leydig cells
c) Chromaffin cells
d) Spermatogonical cells
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Explanation: Sertoli cells are somaticcells of testis that are essential for testis formation and spermatogenesis. It is also called a nurse cell.
10. Cauda epididymis leads to ___________
a) Rete testis
b) Vas deferens
c) Vas efferens
d) Ejaculatory duct
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Explanation: The epididymis consists of three parts head, body and tail. Spermatozoa formed in testis enter caput epididymis progress to corpus and finally reach cauda region where they are stored.
Sanfoundry Global Education & Learning Series – Human Anatomy and Physiology.
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