What is the function of luteinizing hormone (LH) in females?

• A. To stimulate milk production
• B. To trigger ovulation
• C. To regulate menstrual cycles
• D. To support pregnancy

Answer: (B)

Luteinizing hormone (LH) plays a crucial role in the female reproductive system, primarily by triggering ovulation. At mid-cycle during the menstrual phase, a surge in LH levels leads to the release of a mature egg from the ovarian follicle. This process is vital for fertility, as ovulation is necessary for the possibility of conception.

In addition to its role in ovulation, LH also promotes the formation of the corpus luteum, which is essential for producing hormones like progesterone that support early pregnancy if fertilization occurs. While other options relate to different aspects of the female reproductive process, the specific function of LH in initiating the ovulation process is what makes this answer the most accurate.