 Glands release products  Products (hormones) broadcast information throughout body  Slower response(than nervous system) but lasts longer

 Chemical messengers  Bind to specific receptors on cells target cells

 Release secretion through duct to surface  Examples: salivary glands, gastric glands, and sweat glands

 Hypothalamus  Pituitary gland Robert Pershing Wadlow  Testis/Ovaries  Pancreas  Adrenal gland

 Help maintain homeostasis Homeostasis: stable internal environment  Examples: body temperature, water balance, and blood sugar

 Bloodstream carries glucose to cells  Extra glucose stored in liver  Pancreas hormones 1.) Insulin  lowers levels of glucose in blood 2.) Glucagon  raises the levels of glucose in blood

 Juvenile diabetes  Immune system attacks pancreas No insulin produced  Treatment: insulin injections or insulin pump

 Adult-onset diabetes  Body does not produce enough insulin  Glucose builds in bloodstream  Treatment: exercise and diet  Invention of Insulin Invention of Insulin

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