Immediate hypersensitivity reactions like hay fever may be treated by
A) aspirin.
B) anti-rheumatic drugs.
C) immunosuppressive drugs.
D) antihistamines.
E) interferons.
D
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Which is the normal pH range of urine in humans?
a) 8.1 - 10.6 b) 4.6 - 8.0 c) 1.0 - 3.0 d) 3.1 - 4.0 e) 10.0 - 12.0
Most energy storage in the body is accomplished by which of the following cells?
A) macrophages B) lymphocytes C) adipocytes D) fibroblasts E) melanocytes
Guinea pigs have how many teeth?
A) 12 B) 16 C) 18 D) 20
Which of the following is most responsible for keeping the lung surface and the thoracic wall from separating?
A. the presence of surfactant B. the negative pressure in the alveolar space C. the force exerted by the external intercostal muscles D. subatmospheric intrapleural pressure E. alveolar pressure is higher than atmospheric pressure