TRB PG Assistant - Human reproduction – organs, menstrual cycle, ART methods Online Test (MCQ Quiz)

1. Which structure in the female reproductive system is primarily responsible for the production of ova (eggs) and female sex hormones like estrogen and progesterone?

A) Fallopian tube B) Uterus C) Ovary D) Vagina

2. The male reproductive organ responsible for producing sperm and male sex hormones like testosterone is the:

A) Epididymis B) Seminal vesicle C) Prostate gland D) Testis

3. What is the primary function of the fallopian tubes (oviducts) in human reproduction?

A) Production of eggs B) Site of fertilization C) Implantation of the embryo D) Production of progesterone

4. The muscular organ where a fertilized egg implants and develops during pregnancy is called the:

A) Cervix B) Uterus C) Vagina D) Ovary

5. Which part of the male reproductive system stores sperm and facilitates their maturation?

A) Vas deferens B) Seminiferous tubules C) Epididymis D) Bulbourethral gland

6. During the menstrual cycle, which hormone is primarily responsible for the thickening of the uterine lining (endometrium)?

A) Luteinizing hormone (LH) B) Follicle-stimulating hormone (FSH) C) Estrogen D) Progesterone

7. Ovulation, the release of a mature egg from the ovary, is typically triggered by a surge in which hormone?

A) Estrogen B) Progesterone C) Follicle-stimulating hormone (FSH) D) Luteinizing hormone (LH)

8. If fertilization does not occur, the corpus luteum degenerates, leading to a drop in progesterone and estrogen levels, which initiates:

A) Ovulation B) Menstruation C) Implantation D) Fertilization

9. The menstrual phase, characterized by the shedding of the uterine lining, typically lasts for how many days?

A) 1-3 days B) 3-7 days C) 7-10 days D) 10-14 days

10. Which phase of the menstrual cycle is characterized by the development of follicles in the ovary and the rebuilding of the uterine lining?

A) Menstrual phase B) Follicular phase C) Ovulatory phase D) Luteal phase

11. The luteal phase of the menstrual cycle follows ovulation and is characterized by the formation and function of the corpus luteum, which primarily produces:

A) FSH and LH B) Estrogen only C) Progesterone and estrogen D) Testosterone

12. What is the typical duration of a standard human menstrual cycle, from the first day of one period to the first day of the next?

A) 14 days B) 21 days C) 28 days D) 35 days

13. Which Assisted Reproductive Technology (ART) method involves fertilizing an egg with sperm outside the body in a laboratory dish?

A) Intrauterine insemination (IUI) B) Gamete intrafallopian transfer (GIFT) C) Zygote intrafallopian transfer (ZIFT) D) In vitro fertilization (IVF)

14. In which ART procedure are eggs retrieved from the woman and fertilized with sperm in a laboratory, and the resulting embryo is then transferred to the uterus?

A) Intracytoplasmic sperm injection (ICSI) B) In vitro fertilization (IVF) C) Artificial insemination (AI) D) Surrogacy

15. Which ART technique involves injecting a single sperm directly into a mature egg, often used in cases of severe male infertility?

A) IVF-ET (In Vitro Fertilization with Embryo Transfer) B) ZIFT (Zygote Intrafallopian Transfer) C) ICSI (Intracytoplasmic Sperm Injection) D) GIFT (Gamete Intrafallopian Transfer)

16. What is the primary purpose of Intrauterine Insemination (IUI)?

A) Fertilizing eggs outside the body B) Directly injecting sperm into the uterus during the fertile window C) Transferring embryos into the fallopian tubes D) Stimulating egg production with hormones

17. Gamete Intrafallopian Transfer (GIFT) involves:

A) Fertilizing eggs and sperm in a lab, then transferring the embryo to the uterus B) Transferring unfertilized eggs and sperm directly into the fallopian tube C) Injecting sperm directly into the uterus D) Injecting sperm directly into the egg

18. Zygote Intrafallopian Transfer (ZIFT) is a procedure where:

A) Fertilized eggs (zygotes) are transferred into the fallopian tube B) Sperm are injected into the uterus C) Eggs are fertilized in a lab and transferred to the uterus D) Sperm are injected directly into eggs

19. What is the role of the cervix in reproduction?

A) Producing eggs B) Site of fertilization C) Connecting the uterus to the vagina and dilating during childbirth D) Storing sperm

20. The coiled tube attached to the back of the testis where sperm mature and are stored is called the:

A) Vas deferens B) Seminal vesicle C) Epididymis D) Ejaculatory duct

21. Which gland contributes a significant portion of the seminal fluid, containing fructose to nourish sperm?

A) Prostate gland B) Bulbourethral glands C) Seminal vesicles D) Cowper's glands

22. The phase of the menstrual cycle immediately following ovulation is the:

A) Follicular phase B) Secretory phase (Luteal phase) C) Menstrual phase D) Proliferative phase

23. What is the main function of the Sertoli cells in the seminiferous tubules?

A) Produce testosterone B) Support and nourish developing sperm cells C) Produce seminal fluid D) Transport sperm

24. The interstitial cells (Leydig cells) located between the seminiferous tubules are responsible for:

A) Sperm maturation B) Producing testosterone C) Producing seminal fluid D) Transporting sperm

25. Which hormone is secreted by the pituitary gland and stimulates the development of ovarian follicles?

A) LH (Luteinizing hormone) B) FSH (Follicle-stimulating hormone) C) Estrogen D) Progesterone

26. The LH surge, crucial for ovulation, is triggered by high levels of which hormone?

A) Progesterone B) FSH C) Estrogen D) Testosterone

27. During the luteal phase, the corpus luteum secretes progesterone, which has a crucial role in:

A) Developing ovarian follicles B) Preparing the endometrium for implantation C) Triggering ovulation D) Stimulating FSH production

28. If a woman becomes pregnant, the corpus luteum is maintained by the hormone:

A) FSH B) LH C) hCG (human Chorionic Gonadotropin) D) Estrogen

29. Which ART method is most suitable for couples where both partners have infertility issues, possibly involving genetic screening of embryos?

A) IUI B) GIFT C) IVF with PGD (Preimplantation Genetic Diagnosis) D) AI

30. The term 'menarche' refers to:

A) The cessation of menstruation B) The first occurrence of menstruation C) The ovulation period D) The implantation of an embryo

31. The cessation of menstruation, typically occurring around the age of 45-55, is known as:

A) Menarche B) Ovulation C) Menopause D) Implantation

32. Which component of semen is alkaline and helps to neutralize the acidity of the female reproductive tract?

A) Spermatozoa B) Fructose C) Prostatic fluid D) Seminal vesicle fluid

33. The muscular tube that connects the uterus to the outside of the body is the:

A) Cervix B) Oviduct C) Vagina D) Urethra

34. The process of sperm production is called:

A) Oogenesis B) Gametogenesis C) Spermatogenesis D) Fertilization

35. The process of egg production is called:

A) Spermatogenesis B) Oogenesis C) Gametogenesis D) Ovulation

36. Which of the following is NOT a component of seminal fluid?

A) Fructose B) Spermatozoa C) Citric acid D) Prostaglandins

37. What is the primary role of the scrotum in the male reproductive system?

A) Produce sperm B) Produce testosterone C) Regulate the temperature of the testes for optimal sperm production D) Transport sperm

38. The proliferative phase of the menstrual cycle is characterized by the growth and repair of the:

A) Ovary B) Fallopian tube C) Endometrium D) Cervix

39. In the context of ART, what does 'embryo cryopreservation' refer to?

A) Freezing of sperm B) Freezing of unfertilized eggs C) Freezing of embryos for future use D) Freezing of ovarian tissue

40. Which hormone is responsible for the secondary sexual characteristics in females, such as breast development?

A) Testosterone B) Progesterone C) Estrogen D) FSH

41. The vas deferens (ductus deferens) is a tube that transports sperm from the epididymis to the:

A) Seminal vesicle B) Ejaculatory duct C) Prostate gland D) Urethra

42. What is the main function of the bulbourethral glands (Cowper's glands)?

A) Produce sperm B) Produce seminal fluid C) Secrete a pre-ejaculate fluid that lubricates the urethra and neutralizes residual acidity D) Produce testosterone

43. Which of the following is a common reason for using IVF?

A) Blocked fallopian tubes B) Low sperm count C) Ovulation disorders D) All of the above

44. The acrosome, a cap-like structure on the head of a sperm, contains enzymes essential for:

A) Sperm motility B) Penetrating the egg C) Nourishing the sperm D) Transporting the sperm

45. What is the primary site of fertilization in humans?

A) Ovary B) Uterus C) Fallopian tube (ampulla) D) Vagina

46. The menstrual cycle is regulated by a complex interplay of hormones from the hypothalamus, pituitary gland, and:

A) Adrenal gland B) Thyroid gland C) Ovaries D) Pancreas

47. Which ART method is often referred to as 'test-tube baby' technology?

A) IUI B) GIFT C) ZIFT D) IVF

48. The process by which a sperm fuses with an ovum is called:

A) Gametogenesis B) Cleavage C) Fertilization D) Implantation

49. Which hormone, produced by the developing placenta, is detected in pregnancy tests?

A) Progesterone B) Estrogen C) hCG (human Chorionic Gonadotropin) D) LH

50. The average number of days for the follicular phase of the menstrual cycle is approximately:

A) 5 days B) 7 days C) 14 days D) 28 days

Human reproduction – organs, menstrual cycle, ART methods - Online Test

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