This endocrine system diagram depicts several organs known as glands. Hormones are created and secreted (released) by these glands, which are located throughout your body. Hormones are chemicals that help your body coordinate different functions by transporting messages through your blood to your organs, skin, muscles, and other tissues. These signals direct your body on what to do and when. Your endocrine system constantly monitors the number of hormones in your blood. As shown in this endocrine system diagram, hormones deliver their messages by locking into the cells they target. When your hormone levels rise, the pituitary gland signals other glands to stop producing and releasing hormones.
