1. Hormone producing glands that helps maintain homeostasis
Endocrine System
Hormone producing glands that helps maintain homeostasis

2. Hormones circulate through the body in the blood

3. Hormones are:
chemicals produced by endocrine glands
Able to control body parts

4. Hormones are specific:
Only target cells have the right receptors
Other body parts are unaffected

5. 9 main glands

6. Exocrine glands Endocrine Glands Ducts Yes No Hormones Secrete outside
examples
Tear ducts
Sweat glands
Oil glands
9 glands
distribution by blood

7. Exocrine glands Endocrine Glands Ducts Yes No Hormones Secrete outside
examples
Tear ducts
Sweat glands
Oil glands
9 glands
distribution by blood

8. Very little hormone is produced at a time
10-12 Mol/L

9. Hormone production is determined by:
Internal Balance (water/salt/nutrients)
Nervous system
Other endocrine hormones

10. Hormone impact affected by:
Amount of production & Secretion
Blood flow to the target area
½ life of the hormone
Hormone concentration in blood

11. ½ life of a hormone = time required for breakdown

12. Antagonistic hormone:
Hormones with opposite actions.
EX. Insulin converts sugar to fat
Glucagon converts fat to sugar

13. Steroid hormone:
Hormones composed of cholesterol.
4 carbon rings

14. Non-Steroid hormone:
Hormones composed of protein or polypeptides or aminoacids.
2 carbon rings

15. Steroid hormone:
Permeable to membranes
Receptor in cytoplasm
Enters nucleus

16. Non-Steroid hormone:
Not Permeable to membranes
Receptor in cell membrane
ATP - cAMP

17. Non-Steroid hormones:
Adrenaline LH
FSH
Anti-diuretic hormone
Adrenocorticotropic hormone

18. Which type of hormone?

19. Which is a steroid?

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