The Endocrine System Broadcasting throughout the body!

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Presentation transcript:

The Endocrine System Broadcasting throughout the body!

Endocrine System: The Video Clip

PURPOSE of Endocrine System GLANDS RELEASE PRODUCTS (HORMONES) INTO BLOODSTREAM PRODUCTS (HORMONES) BROADCAST MESSAGES TO BODY LIKE A RADIO BROADCAST

GLANDS PRODUCE AND RELEASE SUBSTANCES OR SECRETIONS EXOCRINE GLANDS:EXOCRINE GLANDS: –SECRETE SUBSTANCES THROUGH DUCTS –EX: –EX: SWEAT AND TEARS ENDOCRINE GLANDS:ENDOCRINE GLANDS: –RELEASE SECRETIONS (HORMONES) DIRECTLY INTO BLOOD STREAM

Hormones: The Video Clip

HORMONES ACT AS THE BROADCASTERS BY FLOWING THROUGH BLOODSTREAM AFFECT ACTIVITY OF OTHER CELLS TARGET CELLS:TARGET CELLS: –CELLS THAT HAVE RECEPTORS FOR A PARTICULAR HORMONE –WHAT HAPPENS IF A TYPE OF CELL DOES NOT HAVE RECEPTORS?? CELL WILL NOT RESPOND TO THAT HORMONE!CELL WILL NOT RESPOND TO THAT HORMONE! –Ex. Testosterone will not affect heart cells, but adrenaline will SLOWER AND LONGER-LASTING THAN NERVE RESPONSES

CONTROL OF THE ENDOCRINE SYSTEM FEEDBACK MECHANISMSREGULATED BY FEEDBACK MECHANISMS –EX: HEATING SYSTEMS(LINK)HEATING SYSTEMS ROOM COOLS DOWN FURNACE KICKS ON ROOM WARMS UP FURNACE KICKS OFF

CONTROL OF ENDOCRINE CON’T ACTUAL EXAMPLES IN BODY: CONTROLLING METABOLISM –H–HOW DOES OUR BODY REGULATE CELL ACTIVITY? (LINK) MAINTAINING WATER BALANCE –H–HOW DO WE KEEP FROM GETTING DEHYDRATED?

Dehydration Prevention When thirsty, the hypothalamus triggers the pituitary gland to release ADH (anti-diuretic hormone) This usually makes you drink water. The increased levels of water in body will then inhibit the pituitary gland and stop production of ADH. In addition, the high water levels will tell the pituitary to send a message to your kidneys to increase the amount of water being filtered out of your blood.