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MMLU-Pro / 3018 / High levels of progesterone are essential for the maintenance of the uterine…

Problem

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question

High levels of progesterone are essential for the maintenance of the uterine lining during pregnancy. But high levels of progesterone exerts a negative feedback action on LH secretion, with a consequent decrease in LH secretion and eventual atrophy of the corpus luteum. Atrophy of the corpus luteum cuts the progesterone supply resulting in menstruation. Clearly, these events cannot take place after conception, or the embryo would get sloughed off. When conception occurs, the corpus luteum is seen to last through most of pregnancy. How can this be explained?

category

biology

options

  1. The endometrium produces a hormone that supports the corpus luteum throughout pregnancy.
  2. The body naturally adjusts progesterone levels during pregnancy.
  3. The placenta secretes a hormone, chorionic gonadotrophin, which takes the place of LH in preserving the corpus luteum. This allows the corpus luteum to secrete high levels of progesterone without being shut off.
  4. The corpus luteum spontaneously increases in size during pregnancy, which maintains progesterone levels without hormonal regulation.
  5. The corpus luteum is replaced by a secondary organ that secretes progesterone during pregnancy.
  6. The corpus luteum is not necessary during pregnancy.
  7. The embryo produces progesterone independently, eliminating the need for the corpus luteum after conception.
  8. The corpus luteum's lifespan is extended due to increased blood flow to the ovaries during pregnancy.
  9. The mother's pituitary gland secretes additional LH during pregnancy to maintain the corpus luteum.
  10. The embryo secretes a hormone to preserve the corpus luteum.

src

stemez-Biology

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Source and history

upstream_id / Original problem ID
3018
task_id
6a571507-384e-5568-88c8-4e2b63245708
task_key
default--test--3018
task_revision_id
1
config / split
default / test

Official source

initial import