Physiology Adrenal Glands

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Author:
pszurnicki
ID:
63037
Filename:
Physiology Adrenal Glands
Updated:
2011-01-30 22:43:44
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Physiology Adrenal Glands
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Physiology Adrenal Glands
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  1. What is the pathway synthesis for norepinephrine and epinephrine?
    P
    T
    L
    D
    N
    E
    phenylalanine--tyrosine---l-dopa---dopamine--norepinephrine--epinephrine
  2. Pheochromocytoma is caused by what?
    adrenal medulla tumor
  3. What are the symptoms of pheochromocytoma?
    5P's
    • Elevated blood pressure
    • Pallor
    • Headache
    • Palpitations
    • Perspiration
  4. The tumore in Pheochromocytoma is derived from what cells?
    Chromaffin cells
  5. Concentration of what ion can directly influence the secretion of Aldosterone?
    Plasma k+
  6. Sexual infatilism results from which congenital adrenal hyperplasia?
    17 alpha hydroxylase deficiency
  7. What is the number one cause of Cushing's Syndrome?
    Exogenous(Iatragenic) steroids
  8. What are endogenous causes for Cushing's syndrome?
    • Ant. Pituitary adenoma--high ACTH
    • Ectopic ACTH from a small cell lung cancer..high ACTH
    • Adrenal adenoma----low ACTH
  9. Cushing's syndrome is caused by?
    High cortisol levels
  10. What are the symptoms of Cushing's syndrome?
    Moon face, Buffalo hump, truncal obesity, hypertension
  11. Dexamethasone suppresion test is done for what purpose?
    To determine whether Cushings syndrome is caused by a Pituitary adenoma
  12. Low level of dexamethasone would yield what results in a person with high levels of cortisol?
    High level of cortisol would remain constant
  13. High level of dexamethasone administration would result in what cortisol levels in a person with high cortisol level?
    Cortisol levels would remain high in ectopic ACTH or Adrenal adenoma ACTH but would be lower if an Ant. Pituitary adenoma was producing ACTH
  14. High levels of ACTH result in what skin condition?
    Skin pigmentation
  15. What is the differentiating feature of neuroblastoma and Pheochromocytoma?
    In Pheochromocytoma you get episodic hypertension
  16. What is Conn's Syndrome?
    Hyperaldosteronism
  17. Alkalosis is usually results in what?
    Tetany
  18. What is the difference between primary (Conn's Syndrome) and a secondary Hyperaldosteronism?
    • Conn's syndrome--low renin bc volume increases
    • secondary hyperaldosteronism--high renin bc volume doesn't increase
  19. What are the effects of aldosterone?
    • Na+ absorption/K+excretion
    • H+ excretion
    • H20 absorption

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