Hormones are chemical substances that coordinate processes within the body. Glands release these hormones, which are caried through the blood stream to the target cells. Their effects are slow and long lasting.
The Menstrual Cycle
The menstrual cycle is an example of hormones affecting the way the body works.
1/ At the start of the menstrual cycle FSH (Follicle Stimulating Hormone) is released from the pituitary gland. It then stimulates maturation of one egg in the ovary (days 0-12).
2/Ovary releases …