In humans, after fertilization, the fertilized egg travels to the uterus, where it gets fixed or attached to the walls of uterus, and further development takes place. The necessary blood and nutrient supply are maintained here.

The ovary is a female reproductive organ which releases the ovum, or unfertilized egg for fertilization.

Oviducts or fallopian tubes are situations where fertilization between a sperm and an ovum takes place.

Testis are male reproductive organs which produce sperm, or male gametes.