Which of the following combination of hormones are secreted during pregnancy in humans?
(A) hCG
(B) LH
(C) hPL
(D) Relaxin
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → (A), (C) and (D) only
During pregnancy the placenta works as an endocrine gland, and the ovary adds one more hormone.
(A) hCG — Secreted. Human chorionic gonadotropin is made by the placenta.
(B) LH — Not one of them. LH is a pituitary hormone of the normal menstrual cycle; its surge causes ovulation.
(C) hPL — Secreted. Human placental lactogen is made by the placenta.
(D) Relaxin — Secreted. Relaxin is secreted by the ovary in later pregnancy. hCG, hPL and relaxin are made in women only during pregnancy.
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. Let us remember that hCG, hPL and relaxin are produced in women only during pregnancy.”