Follicle-Stimulating Hormone and Luteinizing Hormone

Both follicle-stimulating hormone and luteinizing hormone are gonadotropic hormones. Gonadotropic meaning :

In females FSH promote the growth and develpment of follicle cells in ovaries. Follicle cells surround a developing oocyte. In response to FSH they grow and develop to the point that one ruptures and expels an ovum to be fertilized. In males FSH stimulates the production of sperm in the testes.

Luteinizing hormone (LH) induces ovulation, the release of an egg by the ovary, in females. It also stimulates the secretion of estrogen and progestins, such as progesterone. In males, LH stimulates the production and secretion of andrgoens, the male sex hormones including testosterone.

Hypogondaism is caused by abnormally low production of gonadotropins. Children with this condention will not undergo sexual maturation. Adults with hypogonadism cannot produce functional sperm or oocytes (eggs).

this video provides details on how the FSH and LH works in males.