![]() ![]() This hormone enters the maternal circulation and allows the mother to recognise the embryo and begin to change her body to support a pregnancy. When an egg is fertilised, it travels though the female reproductive tract and implants into the womb around 9 days after it was fertilised, releasing a hormone called human chorionic gonadotrophin in the process. The early stages of pregnancyįollowing conception, a new embryo must signal its presence to the mother, allowing her body to identify the start of pregnancy. ![]() Initially, the ovaries, and then later, the placenta, are the main producers of pregnancy-related hormones that are essential in creating and maintaining the correct conditions required for a successful pregnancy. In response to this, the target tissue or organ functions in a way that ensures pregnancy is maintained. Hormones travel around the body, usually via the blood, and attach to proteins on the cells called receptors – much like a key fits a lock or a hand fits a glove. ![]() Hormones act as the body’s chemical messengers sending information and feeding back responses between different tissues and organs. The correct balance of hormones is essential for a successful pregnancy.
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