A single Regional Dressage Championship program organized by the United States Dressage Federation (USDF), and recognized by the United States Equestrian Federation, Inc. (USEF), will be held in each of the nine USDF.
If fertilization and/or implantation does not take place, the system is designed to menstruate (the monthly shedding of the uterine lining). In addition, the female reproductive system produces female sex hormones that maintain the reproductive cycle.
Reproductive System . Special note: The human body and reproduction involve highly personal information and topics. This page and all pages on this site are intended to supplement instruction and guidance from parents, schools and other responsible community organizations. The reproductive system is responsible for the creation of new life. Humans have sexual reproduction. This means that a male and female come together to form a new baby. Parts of the reproductive system. Gamete: The male or female sex cell that unite to form a zygote. Gonad: The major male or female reproductive organs that make the male and female sex cells (ovum and sperm). Puberty: This occurs around the preteen and teen years when males and females bodies mature and they become capable of creating new life.