Vascular Phenomenon and Microcirculation Quiz

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

Arterioles, capillaries, and venules (correct)

Pulmonary arteries and veins

Veins, arteries, and lymphatic vessels

Aorta, pulmonary artery, and hepatic vein

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