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MBBS QUESTION #10294
Question 1
A woman tracking her basal body temperature notices a sustained rise of approximately 0.5°C beginning around the time of ovulation and persisting through the luteal phase. This thermogenic effect is primarily attributed to:
  • Estrogen
  • Progesterone, secreted by the corpus luteum after ovulation✔️
  • Follicle-stimulating hormone
  • Luteinizing hormone acting directly on the hypothalamic thermoregulatory center
Correct Answer Explanation
Progesterone, secreted in large amounts by the corpus luteum after ovulation, has a mild thermogenic (temperature-raising) effect on the hypothalamus, producing the sustained basal temperature rise used clinically to help confirm that ovulation has occurred.