Free Menstrual Cycle MCQs with Answers
49 Menstrual Cycle MCQs from Biology, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
The menstrual cycle covers the coordinated changes in the ovaries and uterus, including menstruation, follicular growth, ovulation and corpus luteum formation. It links follicle-stimulating hormone, luteinizing hormone, oestrogen and progesterone with endometrial changes, and distinguishes the ovarian cycle from the uterine cycle and the hormonal events of pregnancy.
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- A. progesterone
- B. FSH
- C. LH
- D. oxytocin
Explanation: Progesterone from the corpus luteum maintains the thickened endometrium and inhibits FSH and LH so that no further follicle ripens.
Correct answer: progesterone- A. oestrogen alone
- B. luteinising hormone
- C. progesterone
- D. follicle stimulating hormone
Explanation: Rising oestrogen from the ripening follicle switches the pituitary from negative to positive feedback and produces a sudden LH surge…
Correct answer: luteinising hormone- A. 5
- B. 8
- C. 21
- D. 14
Explanation: Ovulation falls near the midpoint of the cycle, roughly fourteen days before the next period begins, because the luteal phase is the fixed…
Correct answer: 14- A. oestrogen rises sharply
- B. follicle stimulating hormone falls to zero
- C. the corpus luteum degenerates and progesterone falls
- D. the blastocyst implants in the uterine wall
Explanation: Without implantation the corpus luteum breaks down, progesterone withdrawal removes the support of the endometrium, its blood vessels…
Correct answer: the corpus luteum degenerates and progesterone falls- A. FSH surge
- B. LH surge
- C. Estrogen decrease
- D. Progesterone increase
Explanation: The LH surge (luteinizing hormone) triggers ovulation, releasing the mature egg from the Graafian follicle.
Correct answer: LH surge- A. FSH and LH
- B. Estrogen and progesterone
- C. hCG
- D. Prolactin
Explanation: The corpus luteum (formed from the ruptured follicle) secretes progesterone and estrogen to maintain the endometrium.
Correct answer: Estrogen and progesterone- A. Corpus luteum
- B. Trophoblast/Placenta
- C. Pituitary
- D. Hypothalamus
Explanation: Human chorionic gonadotropin (hCG) is produced by the trophoblast (developing placenta) to maintain the corpus luteum.
Correct answer: Trophoblast/Placenta- A. Rise in estrogen
- B. Fall in progesterone and estrogen
- C. Rise in hCG
- D. Rise in LH
Explanation: When pregnancy doesn't occur, the corpus luteum degenerates → progesterone and estrogen fall → endometrium breaks down.
Correct answer: Fall in progesterone and estrogen- A. Testosterone
- B. Nourishment to developing sperm
- C. LH
- D. FSH
Explanation: Sertoli (nurse) cells provide nutrients and support to developing sperm cells in the seminiferous tubules.
Correct answer: Nourishment to developing sperm- A. Rising progesterone
- B. Falling progesterone and rising oxytocin
- C. Rising hCG
- D. Falling estrogen
Explanation: Falling progesterone and rising oxytocin and prostaglandins trigger uterine contractions for childbirth.
Correct answer: Falling progesterone and rising oxytocin- A. Decrease in Estrogen
- B. Decrease in FSH
- C. Increase in FSH
- D. Environmental effect
Explanation: This is the option marked correct in the official UHS answer key. The physiology worth carrying into the exam is that the LH surge is…
Correct answer: Decrease in FSH- A. Days 7-10
- B. Days 11-14
- C. Days 15-18
- D. Days 19-22
Explanation: Ovulation falls at about day 14, and the LH surge precedes it by roughly a day, so it lies in the window from day 11 to 14.
Correct answer: Days 11-14- A. fertilization
- B. ovulation
- C. implantation
- D. none of these
Explanation: Ovulation is the release of a mature secondary oocyte from an ovarian follicle, usually around the middle of the menstrual cycle.
Correct answer: ovulation- A. Graffian follicle
- B. Ovary
- C. Corpus luteum
- D. Placenta
Explanation: After ovulation, the ruptured Graafian follicle changes into the corpus luteum, a yellow endocrine structure that secretes progesterone.
Correct answer: Corpus luteum- A. Decrease FSH, Decrease estrogen
- B. Increase FSH and Increase estrogen
- C. Decrease FSH and Increase LH
- D. Increase FSH and decrease LH
Explanation: The correct answer is C.Decrease in FSH and increase in estrogenThis is because the surge in luteinizing hormone (LH) that leads to…
Correct answer: Decrease FSH and Increase LH- A. Hypothalamus
- B. Ovary follicles
- C. Corpus luteum
- D. Pituitary gland
Explanation: The pituitary gland releases hormones like FSH and LH that stimulate the maturation of structures such as the follicles.
Correct answer: Pituitary gland- A. Lueal
- B. Follicular
- C. Ovulation
- D. Menstruation
Explanation: The correct answer is menstruation. During the menstrual phase, the lining of the uterus, known as the endometrium, degenerates and is…
Correct answer: Menstruation- A. Estrogen
- B. Progesterone
- C. Luteinising hormone
- D. Follicle stimulating hormone
Explanation: The correct answer is luteinising hormone (LH). LH is responsible for triggering ovulation, which is the release of the egg from the…
Correct answer: Luteinising hormone- A. Luteinizing hormone, progesterone
- B. Luteinizing hormone, Follicle Stimulating hormone
- C. Follicle stimulating hormone, progesterone
- D. Follicle stimulating hormone, luteinizing hormone
Explanation: X is a pituitary hormone that is secreted for ovulation to occur, so it's LH.
Correct answer: Luteinizing hormone, progesterone- A. FSH
- B. Estrogen
- C. LH
- D. Progesterone
Explanation: Leutinizing hormone (LH), the other reproductive pituitary hormone, aids in egg maturation and provides the hormonal trigger to cause…
Correct answer: LHMenstrual Cycle MCQs: common questions
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There are 49 Menstrual Cycle MCQs in the Biology bank, shown 20 to a page with the correct answer and an explanation on each.
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