The implantation site of a fertilized egg, or zygote, is the uterus. The cervix is a neck of tissue that connects the vagina to the uterus. The Vas deferens is the sperm channel from the epididymis to the penis. The penis is the external sexual organ of male. The vagina is the copulatory organ of female. The sperm enters the female’s body in the vagina and moves through the cervix to reach the uterus, then finally the fallopian tubes.