Multiple Choice Questions

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The shared terminal duct of the reproductive and urinary system in the human male is 

  • Urethra

  • Ureter

  • Vas deferens

  • Vas deferens


A.

Urethra

In the human male, the urethra is about 8 inches (20 cm) long and opens at the end of the penis. The urethra provides an exit for urine from the bladder as well as semen from vasa differentia during ejaculation.

Thus, it knows as a urogential duct. It has three regions. Vasa defferentia collects sperm form inside the testis and transfers them epididymis through rete testis. Ureters are the tubes that convey urine from the kidney to urinary bladder.

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The Leydig cells as found in the human body are the secretory source of

  • Progesterone

  • Intestinal mucus

  • Glucagon

  • Glucagon

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In a normal pregnant woman, the amount of total gonadotropin activity was assessed. The result expected was

  • High level of circulating FSH and LH in the uterus to stimulate implantation of the embryo

  • High level of circulating HCG to stimulate endometrial thickening

  • High levels of FSH and LH in uterus to stimulate endometrial thickening

  • High levels of FSH and LH in uterus to stimulate endometrial thickening

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Identify the human developmental stage shown below as well as the related right palce of its occurrence in a normal pregnant woman, and select the right option for the two together. 

  • Developmental Stage Site of Occurrence
    Late morula Middle part of fallopian tube
  • Developmental Stage Site of Occurrence
    Blastula End part of fallopian tube

  • Developmental Stage Site of Occurrence
    Blastocyst Uterine wall

  • Developmental Stage Site of Occurrence
    Blastocyst Uterine wall

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Cycas and Adiantum resemble each other in having 

  • seeds

  • motile sperms

  • cambium

  • cambium

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Select the correct option describing gonadotropin activity in a normal pergnant female

  • High level of FSH and LH stimulates the thickening of endometrium

  • High level of FSH and LH facilitate implantation of the embryo

  • High level of hCG stimulates the synthesis of estrogen and progesterone

  • High level of hCG stimulates the synthesis of estrogen and progesterone

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The main function of mammalian corpus luteum is to produce

  • estrogen only

  • progesterone

  • human chorionic gonadotropin

  • human chorionic gonadotropin

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Which one of the following statements is false in respect of viability of mammalian sperm ?

  • Sperm is viable for only up to 24 hours

  • Survival of sperm depends on the pH of the medium and is more active in alkaline medium

  • Viability of sperm is determined by its motility

  • Viability of sperm is determined by its motility

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Signals for parturition originate from

  • both placenta as well as fully developed foetus

  • oxytocin released from maternal pituitary

  • placenta only

  • placenta only

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The secretory phase in the human menstrual cycle in also called

  • luteal phase and lasts for about 6 days

  • follicular phase lasting for about 6 days

  • luteral phase and lasts for about 13 days

  • luteral phase and lasts for about 13 days

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