A 10 percent increase in the level of carbon dioxide in the blood will
A) decrease the rate of breathing.
B) double the rate of breathing.
C) decrease pulmonary ventilation.
D) decrease the alveolar ventilation rate.
E) reduce the vital capacity by 10%.
Answer: B
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A. Malignant melanoma B. Eczema C. A contusion D. An abrasion
When pure water is consumed,
A) the ECF becomes hypertonic to the ICF. B) a fluid shift occurs and the volume of the ICF decreases. C) osmolarities of the two fluid compartments fall. D) the volume of the ECF decreases. E) the volume of the ICF decreases.
Which of the following statements is true about teeth?
A. The outer surface of enamel forms the crown of a tooth. B. The primary component of teeth is dentin. C. The root is covered by cementum. D. All of the choices are correct.
Adjustment to close-range vision involves all of the following except
A. activity of the extrinsic eye muscles. B. ciliary muscle activity. C. light adaptation. D. change in the curvature of the lens. E. constriction of the pupil.