Human Anatomy and Physiology : Help with Reproductive Proteins and Hormones

Study concepts, example questions & explanations for Human Anatomy and Physiology

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Example Questions

Example Question #81 : Systems Physiology

What is the purpose of human chorionic gonadotropin (hCG) in the female body?

Possible Answers:

Causes ovulation

Stimulate the corpus albicans

Causes menstruation

Maintains the placenta

Maintains the corpus luteum

Correct answer:

Maintains the corpus luteum


Human chorionic gonadotropin is a peptide hormone that helps prevent the breakdown of the corpus luteum. This allows the corpus luteum to continue secreting progesterone and estrogen during implantation. As the placenta forms, it eventually takes over the job of secreting hormones for the corpus luteum. The corpus luteum is only preserved when fertilization has occurred; normally, the structure devolves into the corpus albicans. Human chorionic gonadotropin can thus be used to detect pregnancy, as it is only secreted after fertilization.

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