Ijmb Model Questions Vol1 2024 Biology Question 9

Practice essay / theory question 9 from the 2024 Ijmb Model Questions Vol1 Biology examination. This question covers Menstrual cycle phases, Hormonal regulation of ovulation, Infertility and cycle irregularities, Management of anovulatory cycles .

Ijmb Model Questions Vol1 2024 Biology Essay / Theory
Topics: Menstrual cycle phases Hormonal regulation of ovulation Infertility and cycle irregularities Management of anovulatory cycles
Question 9 IJMB_MODEL_QUESTIONS_VOL1 • 2024 • BIOLOGY • essay

A 28‑year‑old woman presents with a 6‑month history of irregular menstrual cycles ranging from 35 to 48 days. She reports occasional mid‑cycle spotting. On day 10 of her cycle, serum hormone concentrations are: FSH 12 IU/L, LH 8 IU/L, estradiol 150 pg/mL, progesterone 0.8 ng/mL. On day 20, the values are: FSH 6 IU/L, LH 20 IU/L, estradiol 350 pg/mL, progesterone 1.2 ng/mL.

Question Parts

( a )
Identify which phase of the menstrual cycle each set of hormone values corresponds to, giving a brief justification for each.
( b )
Based on the hormone pattern and the reported cycle length, discuss the most likely endocrine disturbance responsible for the irregularity.
( c )
Assuming that ovulation occurs 36 hours after the LH concentration reaches 20 IU/L, estimate the probable day of ovulation in this woman's cycle.
( d )
Propose a concise management plan (pharmacological and lifestyle measures) to regularise her cycles, explaining the rationale for each component.

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About This Question

This is Ijmb Model Questions Vol1 2024 Biology Question 9. It is one of the essay questions from the 2024 Ijmb Model Questions Vol1 Biology examination.

The question covers Menstrual cycle phases, Hormonal regulation of ovulation, Infertility and cycle irregularities, Management of anovulatory cycles .

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