The Endocrine System

1. The Endocrine System Body Control System

2. Endocrine • Combining form crin/o means secrete • Prefix endo means within • Endocrine System consists of glands that secrete

3. Function of Endocrine System • Hormones are the chemical messengers for the Endocrine System • Produce and secrete hormones into blood stream to help control body activities • Works closely with the Nervous System

4. Exocrine Glands • Exocrine Glands – secrete their products into ducts • The ducts then carry the secretions into body cavities or to body surface • E.g. sweat glands, sebaceous glands, lymph glands

5. Endocrine Glands • Don’t contain ducts • Secrete their products directly into the blood stream • E.g. Pituitary gland, thyroid, parathyroid, adrenal, pineal, pancreas, ovaries, testes

6. What are hormones? • Chemical messengers • Transfer information and instructions from one set of body cells to another • Each type of hormone stimulates a specific sets of cells in organs to cause an action of that organ to happen • E.g. oestrogen causes changes to female sex characteristics • helps maintain homeostasis of the body

8. Endocrine Glands

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14. Diabetes