The Endocrine System

• • The Endocrine System: made up of many glands that secrete chemicals called hormones into the circulatory system - many hormones are proteins!
• Functions: so many! regulates:

  • growth & development
  • reproduction
  • stress responses
  • blood sugar levels
  • calcium levels
  • blood pressure & water balance
• • Hormones travel through the bloodstream to target organs where they have receptors for the hormone
  • The hormone stimulates the organ or second gland to respond or change
• Example of Gland and Hormone Action:

  • The pancreas (endocrine gland) secretes insulin, which stimulates body cells and the liver to take in glucose - lowering the concentration in blood