During this phenomenon (arrow mark), changes in hormone levels noted are,
Increased estrogen, increased progesterone
Decreased estrogen, increased progesterone
Decreased estrogen, decreased progesterone
Increased estrogen, decreased progesterone
Ans. (d) Increased estrogen, decreased progesterone(Ref: Ganong, 25th ed/p.403)LH surge happen 24 - 36 hrs before ovulationAt that time, there is increased estrogen, decreased progesterone.
Endocrinology and Reproduction