Which of the following events occurs first in the pathogenesis of asthma?
a. destruction of lung tissue
b. airway inflammation
c. bronchodilation
d. loss of lung elasticity
b. The first event that occurs is airway inflammation, which is due to the release of inflammatory mediators (e.g., histamine, prostaglandins, leukotrienes, and other cytokines), triggered by exposure to allergens such as dust, plant pollen, smoke, and animal dander; exercise; stress; changes in weather; and most frequently, upper respiratory viral infection. These inflammatory mediators cause swelling of the airways and provoke contraction of the airway smooth muscle.
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Having large amounts of cash in an office poses a security risk and also offers the potential for ________ of funds
a. increase b. embezzlement c. enhancement d. refuge
The normal osmotic pressure in the capillary is
A) 6 mm Hg B) 28 mm Hg C) 9 mm Hg D) 19 mm Hg
Which of the following inflammatory cells characterizes the infiltrate seen microscopically in tuberculosis, histoplasmosis, and other deep fungal infections?
a. Plasma cells b. Macrophages c. Neutrophils d. Basophils e. Eosinophils
The part of the eye that other people see, which exhibits color, is the:
A. canal B. iris C. posterior D. pupil