Question

Which of the following hormones is secreted by implanted blastocyst that acts on the corpus luteum in the ovary, stimulating the body to produce estrogens and progesterone to maintain the uterine lining?

• A. Estrogen
• B. HCG
• C. Progesterone
• D. Oxytocin

Answer 1

Answer: (C)

Progesterone

Answer 2

Blastocyst secretes a hormone called Human Chorionic Gonadotropin $(HCG)$, which maintains the corpus luteum in the ovary.