The reproductive, endocrine, and nervous systems all function the body frequently. They use cells for communication. They also work together through sex hormones. The nervous system keeps the organism alive and attracts the mate. The reproductive system allows the mating and reproduction and the development of the nervous system. The endocrine system regulates the sex hormones for ovulation and other body functions. The pituitary gland and other endocrine glands are controlled by the hypothalamus.
