Biology Reproduction MDCAT 2016
PMDC Verified Question 71 of 81
Decrease of FSH and increase of estrogen cause pituitary gland to secrete:
A
Somatotrophin
B
Testosterone
C
Luteinizing hormone
D
Spermatogonium
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option C: Luteinizing hormone
Concept:

The mid-cycle hormonal shift relies on a switch from negative to positive feedback by estrogen.

Solution:

  • During the late follicular phase, the dominant follicle secretes exceptionally high levels of estrogen.


  • While moderate estrogen inhibits FSH, peak estrogen levels exert a positive feedback effect on the anterior pituitary.


  • This sudden positive feedback triggers a massive surge in the secretion of Luteinizing Hormone (LH), which is the direct trigger for ovulation.


Why other options are incorrect:

Somatotrophin is growth hormone. Testosterone is primarily a male hormone. Spermatogonium is a male germ cell, not a hormone.

Quality & Fidelity Assurance: Every question on BeambePrep is rigorously curated against the official PMDC syllabus with zero filler, zero out-of-syllabus content, and zero typos. When an authentic past paper originally contained a historical mistake or ambiguity from the examining board (such as UHS or NUMS), BeambePrep faithfully reflects the original paper while detailing the nuance and scientific consensus in the autopsy above.

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