Human chorionic gonadotropin (hCG) is primarily associated with which function?

Human chorionic gonadotropin (hCG) plays a crucial role in early pregnancy by supporting the maintenance of the corpus luteum. This is vital because the corpus luteum produces progesterone, which is necessary for sustaining the uterine lining and preventing menstrual shedding during the early stages of pregnancy. By ensuring that progesterone levels remain high, hCG facilitates a suitable environment for the developing embryo and supports its continued growth and attachment to the uterine wall.

The other functions described in the options are not primarily associated with hCG. While uterine contractions, ovulation, and lactation are essential processes in reproductive health, they are regulated by different hormones. For instance, oxytocin is primarily responsible for stimulating uterine contractions during labor, luteinizing hormone (LH) is key in the ovulatory process, and prolactin is the main hormone involved in promoting lactation. Thus, hCG’s primary role focuses specifically on the early stages of pregnancy, making it essential for embryonic development and maternal adaptation during this period.