1. BELL WORK

2. BODY SYSTEMS ENDOCRINE SYSTEM

3. OBJECTIVES  identify the main function of the endocrine system.  explain the jobs done by different hormones.  describe disorders of the endocrine system

4. ENDOCRINE SYSTEM Your endocrine system is responsible for the fast growth you experience during your teen years. endocrine system A chemical communication system that controls many body functions

5. PARTS OF THE ENDOCRINE SYSTEM The endocrine system is made up of glands located throughout the body. gland A group of cells or organs that secretes a substance

6. PARTS OF THE ENDOCRINE SYSTEM The pancreas is part of the endocrine system because it secretes insulin.

7. PARTS OF THE ENDOCRINE SYSTEM The endocrine glands work by responding to signals from the brain or from the pituitary gland. pituitary gland A gland that signals other endocrine glands to produce hormones when needed

8. PARTS OF THE ENDOCRINE SYSTEM The pituitary gland is located at the midpoint of the skull, behind the eyes.

9. HORMONES The chemicals secreted by the endocrine glands are called hormones. Each hormone has a specific job.

10. HORMONES Regulates salt and water balance, metabolism, the immune system, and the body’s response to stress. Regulates the level of calcium in the blood. Regulates the wake-sleep cycle. Stimulates the growth of bone and other body tissues Regulates the rate at which cells burn fuel from food to produce energy.

11. BODY’S RESPONSE TO STRESS

12. PROBLEMS Type 1 diabetes occurs when the pancreas cannot produce enough insulin.

13. PROBLEMS Type 2 diabetes occurs when the body cannot use the insulin it produces properly.

14. PROBLEMS Overactive thyroid gland Underactive thyroid gland Symptoms include swelling in the front of the neck, nervousness, increased swelling, and weight loss. Symptoms include tiredness, depression, weight gain, hair loss, and muscle and joint pain.

15. PROBLEMS When the pituitary gland releases too much growth hormone, it can result in a very tall person.

16. PROBLEMS When the pituitary gland releases too little growth hormone, it can result in a very small person.

17. CARE