The chemical mediator that causes prolonged bronchospasm, vascular permeability, and mucus secretion of asthmatic patients is
A)prostaglandin.
B)histamine.
C)leukotriene.
D)serotonin.
E)platelet-activating factor.

Question

Quizplus · Accepted Answer

Leukotrienes are the chemical mediators that cause prolonged bronchospasm, vascular permeability, and mucus secretion of asthmatic patients. This is why leukotriene modifiers are used in the treatment of asthma. Prostaglandins, histamine, serotonin, and platelet-activating factor also play a role in asthma but do not cause the same prolonged effects as leukotrienes.

The Chemical Mediator That Causes Prolonged Bronchospasm, Vascular Permeability, and Mucus