If spermatogenesis proceeds too rapidly, inhibin is released. Inh

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 Multiple Choice QuestionsMultiple Choice Questions

131.

Fertilization occur in

  • uterus

  • ureter

  • vagina

  • fallopian tube


132.

Name the hormone that has no role in menstruation

  • LH

  • FSH

  • GH

  • TSH


133.

In spermatogenesis, reduction division of chromosome occurs during conversion of

  • spermatogonia to primary spermatocytes

  • primary spermatocytes to secondary spermatocytes

  • secondary spermatocytes to spermatids

  • spermatids to sperms


134.

Presence of which of the following hormone in the urine confirms pregnancy?

  • Progesterone

  • Oestrogen

  • Human chorionic gonadotropin

  • Prolactin


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135.

A pregnant female delivers a baby, who suffers from stunted growth, mental retardation low intelligence quotient and abnormal skin. This is the result of

  • deficiency of iodine in diet

  • low secretion of growth hormone

  • cancer of the thyroid gland

  • over secretion of pars distalis


136.

What is the correct sequence of sperm formation?

  • Spermatid, Spermatocyte, Spermatogonia, Spermatozoa

  • Spermatogonia, Spermatocyte, Spermatozoa, Spermatid

  • Spermatogonia, Spermatozoa, Spermatocyte, Spermatid

  • Spermatogonia, Spermatocyte, Spermatid, Spermatozoa


137.

Menstrual flow occurs due to lack of

  • progesterone

  • FSH

  • oxytocin

  • vasopressin


138.

Which one of the following is not the function of placenta? It

  • facilitates supply of oxygen and nutrients to embryo

  • secretes oestrogen

  • facilitates removal of carbon dioxide and waste material from embryo

  • secretes oxytocin during parturition


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139.

The correct sequence of embryonic development is

  • Blastula - Morula - Zygote - Gastrula - Embryo

  • Zygote - Blastula - Morula - Gastrula - Embryo

  • Zygote - Morula - Blastula - Gastrula - Embryo

  • Gastrula - Morula - Zygote - Blastula - Embryo


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140.

If spermatogenesis proceeds too rapidly, inhibin is released. Inhibin reduces the secretion of

  • Luteinising Hormone (LH)

  • Follicle Stimulating Hormone (FSH)

  • Testosterone

  • Interstitial Cell Stimulating Hormone (ICSH)


B.

Follicle Stimulating Hormone (FSH)

Spermatogenesis is initiated due to an increase in the secretion of Gonadotropin Releasing Hormone (GnRH) by the hypothalamus at the age of puberty. Increase in the levels of GnRH acts on the anterior pituitary and stimulate the secretions of two gonadotropin, i.e., Luteinising Hormone (LH) and Follicle Stimulating Hormone (FSH). 

When spermatogenesis proceeds too rapidly in males, another hormone called inhibin is secreted from the Sertoli cells. Which has a negative feedback property which inhibits the secretion of FSH from anterior pituitary.


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