Endocrine Physiology: Stress Physiology II
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Questions and Answers

What is the effect of dopamine on the heart?

  • It has a positively inotropic effect (correct)
  • It has no effect on the heart
  • It only affects the β2 adrenergic receptors
  • It has a negatively inotropic effect

    • What is the level of catecholamine secretion in basal states?

  • High
  • Moderate
  • Variable
  • Low (correct)

    • What happens to epinephrine secretion during sleep?

  • It increases
  • It is abolished
  • It remains the same
  • It decreases (correct)

    • What is the effect of emotional stresses on norepinephrine secretion?

    <p>It decreases</p> Signup and view all the answers

    What is the effect of epinephrine secretion on systolic hypertension?

    <p>It increases it</p> Signup and view all the answers

    What is the characteristic of 15% of epinephrine-secreting tumors?

    <p>They secrete epinephrine episodically</p> Signup and view all the answers

    What are the symptoms produced by epinephrine-secreting tumors?

    <p>Intermittent bouts of palpitations, headache, and glycosuria</p> Signup and view all the answers

    How can catecholamines be measured in a laboratory?

    <p>Through a 24-hour urine collection</p> Signup and view all the answers

    What are the metabolites of catecholamines measured in a laboratory?

    <p>Vanillymandelic Acid (VMA) and metanephrines</p> Signup and view all the answers

    What type of tumors secrete norepinephrine, epinephrine, or both?

    <p>Adrenal medullary tumors</p> Signup and view all the answers

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