Which of the following hormones are secreted by placenta?
A. hCG
B. hPL
C. Estrogens
D. Progestogens
E. Relaxin
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → A, B, C and D only
A. hCG — Correct. Human chorionic gonadotropin is made by the placenta. It keeps the pregnancy going.
B. hPL — Correct. Human placental lactogen is a placental hormone too.
C. Estrogens — Correct. The placenta produces estrogens during pregnancy.
D. Progestogens — Correct. The placenta produces progestogens, which maintain the endometrium.
E. Relaxin — Incorrect. Relaxin appears in the later phase of pregnancy, but it is secreted by the ovary, not by the placenta.
NCERT Extract:
Pregnancy and Embryonic Development – “… The placenta facilitate the supply of oxygen and nutrients to the embryo and also removal of carbon dioxide and excretory/waste materials produced by the embryo. The placenta is connected to the embryo through an umbilical cord which helps in the transport of substances to and from the embryo. Placenta also acts as an endocrine tissue and produces several hormones like human chorionic gonadotropin (hCG), human placental lactogen (hPL), estrogens, progestogens, etc. In the later phase of pregnancy, a hormone called relaxin is also secreted by the ovary.”