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Endocrine system

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this will be tested on friday FEB 17

this will be tested on friday FEB 17

Published in: Health & Medicine, Technology

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  • 1. The Endocrine System
  • 2. Endocrine System• System that “communicates” to control body functions• Uses chemicals called hormones• Hormones come from glands• Unlike digestive glands, these glands are ductless*If they are ductless, how do they “communicate” with the body?
  • 3. Major Glands of the Endocrine System• hypothalamus• pituitary• thyroid• parathyroid glands• adrenal glands• pineal gland• pancreas*• reproductive organs (gonads)
  • 4. Hypothalamus• found in the brain, lower central part• regulation of satiety, metabolism and body temperature• regulates the pituitary gland – somatostatin: stops release of growth hormone
  • 5. Pituitary Gland• found below the hypothalamus, pea-sized• “most important gland of the endocrine system”• produces a vast number hormones• ex: growth hormone, TSH, ACTH, LH, FSH, prolactin• ex: vasopressin, oxytocin
  • 6. Thyroid Gland• found in the lower front part of the neck• regulates body metabolism• maintains normal blood pressure, heart rate, digestion
  • 7. Parathyroid glands• pair of glands adjacent to the thyroid gland• regulates calcium in bone and blood
  • 8. Adrenal glands• found on top of your kidneys• adrenal cortex and adrenal medulla• outer: corticosteroids – regulate metabolism, salt and water balance• inner: catecholamines – deals with physical and emotional stress (ex: adrenaline)
  • 9. Pineal body• regulates circadian rhythm• SAD (seasonal affective disorder)
  • 10. Pancreas• has both exocrine and endocrine function• “communicates” with the liver by hormones• islets of Langerhans – insulin  – glucagon 
  • 11. Homework• Pheromones• Sex hormones – androgens – estrogens

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