Question

The main function of mammalian corpus luteum is to produce:

• A. Progesterone
• B. Human chorionic gonadotropin
• C. Relaxin only
• D. Estrogen only

Answer 1

The Correct Option is B

The corpus luteum is a temporary endocrine structure in female mammals that plays a crucial role during the reproductive cycle. Its primary function is to produce progesterone.

1. The corpus luteum forms from the follicles that have discharged the egg post-ovulation during the menstrual or estrous cycle.
2. Progesterone is the main hormone secreted by the corpus luteum. This hormone is vital for maintaining the uterine lining (endometrium), which is necessary for establishing and maintaining pregnancy.
3. If fertilization does not occur, the corpus luteum degenerates, leading to a drop in progesterone levels, and subsequently, the shedding of the uterine lining occurs, which is known as menstruation.
4. Though the question suggests human chorionic gonadotropin (hCG) as the answer, it's important to clarify that hCG is not produced by the corpus luteum. Instead, it is produced by the cells of the fertilized egg after implantation in the uterus, and it serves to maintain the corpus luteum during early pregnancy.

In summary, the correct answer describing the primary function of the mammalian corpus luteum is to produce progesterone, not human chorionic gonadotropin. Reviewing basic concepts around reproductive hormones can help eliminate misunderstandings and ensure correct responses in biology-related questions.