The Endocrine System

Your body functions are controlled by two systems, the nervous system and the endocrine system. The nervous system consists of the brain, the brain stem, the spinal chord, and the nerves. This system use nerve impulses or electrical signal to exert its influence on the body. The action of this system is fast, but short lasting. The endocrine system consist of hormones and glands that control body activity. The effect of the endocrine system is slow but long lasting.

Puberty is a time in a young person's life where the action of the endocrine gland is most visible. For example, the hormone testosterone is responsible for most of the visible changes that occur in boys, such as deepening of the voice, facial hair, enlargement of sexual organs ect. As for girls, some of the changes that occur are development of the breast, menstrual cycle etc. To further enhance your understanding of the endocrine system works, click the following link. Endocrine System

Check this video animation: ENDOCRINE SYSTEM

Check out these videos of human body systems: BODY SYSTEMS