The document summarizes the male and female reproductive systems. It explains that the testes in males produce sperm and hormones, and sperm travel through the vas deferens, epididymis, seminal vesicles and urethra. In females, eggs are produced in the ovaries and travel through the fallopian tubes, while the uterus nourishes a developing fetus. Fertilization occurs when sperm enters an egg cell in the fallopian tubes, forming a zygote that implants in the uterus.