1. The Endocrine System

2. The Endocrine System
What does the endocrine system do?

3. Functions of the Endocrine System
The endocrine system consists of groups of organs and tissues that release chemical messages into the bloodstream.
Endocrine tissues that secrete chemical molecules are called endocrine glands.

4. Functions of the Endocrine System (cont.)
A hormone is a chemical that is produced by an endocrine gland in one part of an organism and is carried in the bloodstream to another part of the organism.
hormone
from Greek hormon, means “that which sets in motion”

5. Functions of the Endocrine System (cont.)
The chemical messages are usually sent to more cells and last longer than the messages sent by the nervous system.

7. Lesson 3
Mark Andersen/Getty Images