Chapter 16 (1)

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Author:
mc166589
ID:
138750
Filename:
Chapter 16 (1)
Updated:
2012-02-29 18:19:17
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DrTommyFinley
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Description:
Lecture test number one.
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  1. Describe the Endocrine System.
    Is composed of Cells, Tissues and Organs that secrete hormones into the internal environment.
  2. What is a hormone?
    regulatory chemicals secreted into bloodstream to target cells
  3. What is the function of the Endocrine System?
    Regulate metabolic processes
  4. What are the three hormone groups?
    • Amino acid derivatives
    • Peptide hormone
    • Lipid derivatives
  5. What hormones are classified as amino acid derivatives?
    • Includes thyroid hormones, catecholamines (epinephrine, norepinephrine, and
    • dopamine), and melatonin.
  6. What hormones are classified as peptide hormones?
    prohormones
  7. What is a prohormones?
    inactive hormones that are then activated before or after release.
  8. What is the most abundant type of hormone chemical group in the body?
    Peptide hormones
  9. What hormones are classified as lipid derivatives?
    • Eicosanoids (carbon ring with fatty acid side chains)
    • Leukotrienes (secondary roles as hormones)
    • Prostaglandins (involved primarily in coordinating local cellular activities)
    • Steroid hormones (cholesterol based)
  10. What is the importance of lipid derivatives?
    Important paracrine factors that coordinate cellular activities in extracellular fluids.
  11. What are Steroid hormones released by?
    • Reproductive organs
    • Adrenal cortex
    • Kidneys
  12. What organs release hormones as a secondary function?
    Heart, kidneys, intestines, thymus, and reproductive organs

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