7. the system of glands (glands System) serves to create hormones (hormone), which is the liquid chemicals and works with the nervous system to control the engine. The metabolism in the body.
7. The system of glands (glands System) acting hormones (hormone), a chemical fluid and by working with the nervous system in the regulation of various metabolic reactions in the body.
7. Glands of various System) Act (glands hormone (hormone), which is a chemical liquid and by working together with the nervous system to control the reaction. Burn the body.