Hormones are chemical substances that regulate processes in the body. Hormones are secreted by glands and travel to their target organs in the bloodstream. Several hormones are involved in the female menstrual cycle. Hormones can be used to control human fertility and have advantages and disadvantages.
The hormone FSH is secreted by the pituitary gland. FSH makes two things happen:
it causes an egg to mature in an ovary
it stimulates the ovaries to release the hormone oestrogen.
contraception is the control of life in the use of condoms and contraceptive pills.
they use hormones to increase or decrease the chances of preganancy.
This is where the egg is fertilised outside the woman’s body and then implanted back into her uterus