Link ovarian and uterine changes to FSH, LH, oestradiol and progesterone, including reinforcing and inhibiting feedback.
Tę umiejętność sprawdza 6 zadań wzorowanych na arkuszach IB z lat 2022–2026.
During much of the follicular phase, which response illustrates negative feedback in the menstrual cycle? A. Moderate rising oestradiol suppresses further FSH secretion B. Falling progesterone directly produces a permanent LH surge C. FSH secretion forces the…
Biological function depends on coordinated structures and recurring processes. (a) Outline the roles and regulation of progesterone during the menstrual cycle. (b) Describe the polymerase chain reaction. (c) Explain how carbon is recycled through a terrestrial…
In a model 28-day ovarian cycle, ovulation occurs on day 14. Which structure develops from the ruptured follicle shortly afterwards? A. A placenta B. A second ovary C. A new oviduct D. A corpus luteum
An IVF protocol first suppresses the usual ovarian hormone cycle, then administers hormones to stimulate the ovaries. What is the purpose of this sequence? A. Stimulate endometrial thickening first, then prevent more than one follicle developing B. Trigger an…
Ovarian and pituitary hormones coordinate the menstrual cycle. Describe the role of one named ovarian hormone and one named pituitary hormone.
Which interaction exemplifies negative feedback in regulation of the ovarian cycle? A. Oestradiol enhances all gonadotropin secretion at every concentration and stage B. FSH permanently prevents every follicle from growing C. All progesterone is produced only…
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