Biology Reproduction MDCAT 2016
PMDC Verified Question 70 of 81
Events of menstrual cycle are regulated by the:
A
Ethylene
B
Auxins
C
Gonadotrophins
D
Gibberellins
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option C: Gonadotrophins
Concept:

The human reproductive cycle is orchestrated by complex hormonal interplay originating from the brain.

Solution:

  • The menstrual cycle is fundamentally regulated by hormones released from the anterior pituitary gland, specifically FSH (Follicle Stimulating Hormone) and LH (Luteinizing Hormone).


  • Because these hormones target the gonads (ovaries), they are collectively known as gonadotrophins (or gonadotropins).


Why other options are incorrect:

Ethylene, auxins, and gibberellins are all highly specific plant hormones involved in plant growth, ripening, and tropisms, and play no role in human reproduction.

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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