The Role of Leutinizing Hormone
Luteinizing hormone, along with follicle-stimulating hormone, are types of hormones called menotropins. These two hormones are responsible for regulating the menstrual cycle and the various events that occur during the cycle.
Follicle-stimulating hormone promotes the growth of the ovarian follicle, a structure within which is contained a developing egg and associated cells.
In the meantime, estrogen production increases in the follicle, causing the endometrium of the uterus to thicken just prior to ovulation. Luteinizing hormone helps promote estrogen production.
The primary function of luteinizing hormone is to trigger ovulation. Just before ovulation, blood levels of the hormone increase sharply, to trigger this event.
Luteinizing hormone plays a role in male fertility too. In men, the hormone stimulates the production of testosterone in the testicles. Levels of this hormone remain fairly constant in men once puberty has passed.
In children, luteinizing hormone levels are at very low levels until the pre-puberty stage.