Parturition is triggered by
Correct answer: B. Falling progesterone and rising oxytocin
- 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.
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About Menstrual Cycle
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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