Question

HCG is secreted by:
A. Allantois
B. Corona radiata
C. Corpus luteum
D. Placenta

Answer 1

Hint:-The Human chorionic gonadotropin is the full form of HCG. Human chorionic gonadotropin is one of the hormones produced during the period of pregnancy. It is released to recognize the maternal parent of the baby. While making a pregnancy test, sometimes, the presence of HCG is detected.

Complete answer:
- We can say that human chorionic gonadotropin is one of the glycoprotein polypeptide hormones which is secreted by gonadotropin cells of the anterior pituitary present invertebrate animals.
- According to a research, at least two forms of fish gonadotropins along with many mammalian hormones such as the follicle-stimulating hormone (FSH), human chorionic gonadotropin (hCG), luteinizing hormone (LH), and equine chorionic gonadotropin (ECG), and placental/chorionic gonadotropins, are included in this family.
- In the endocrine system, these hormones are said to be having a central role which regulates normal growth, sexual development, and reproductive function.
- The exact role of Allantois in the growth of an organism is still unclear. Although its blood vessels do turn out to be the umbilical blood vessels during pregnancy. Corona Radiata originated from the cells of squamous granulosa and is present at the primitive stage of follicular development. The corpus luteum secretes hormones like progesterone and Estrogen during this time period, which classically persists from day 15 to day 28 of the catamenial cycle.
So, the correct option is placenta.

Note:- The gonadotropins typically act on the gonads which normally control the production of gamete and sex hormone. The hormones of LH and FSH are concealed by the pituitary gland present in the anterior area. Whereas the hormones of hCG and ECG are veiled by the placenta in pregnant humans and mares, correspondingly. However, there are numerous arrangements of gonadotropic hormone for therapeutic use, mainly it is used as a fertility medication.