Vascular Phenomenon and Microcirculation Quiz
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Questions and Answers

What is the initial stage of vascular changes in the microcirculation?

  • Transient vasoconstriction due to reflex spasm (correct)
  • Prolonged vasodilation due to direct irritant effect
  • Immediate vasodilation due to arteriolar relaxation
  • Stable vasoconstriction due to capillary constriction

    • Which vessels are involved in the local vascular phenomenon?

  • Arterioles, capillaries, and venules (correct)
  • Pulmonary arteries and veins
  • Veins, arteries, and lymphatic vessels
  • Aorta, pulmonary artery, and hepatic vein

    • What causes the transient stage of vasoconstriction in the microcirculation?

  • Dilation of capillaries due to increased blood flow
  • Contraction of lymphatic vessels
  • Reflex spasm as a result of direct effect of the irritant on the vessel wall (correct)
  • Passive relaxation of arteriolar smooth muscle

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