Which of the following helps shield the global population from exposure to essentially all high-energy, bombarding cosmic rays?
a. Clouds
b. Fog
c. Atmosphere and magnetic field of the Earth
d. Smog
c. Atmosphere and magnetic field of the Earth
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Which of the following is NOT true regarding the mechanism of action of nitroglycerin?
A) It decreases cardiac oxygen demand. B) It increases oxygen supply. C) It increases cardiac oxygen demand. D) It relaxes spasms
Ventricular fibrillation has what effect on the cardiac output?
A) No effect B) Causes cardiac output to stop completely C) Causes a decrease D) Causes an increase
The leading cause of death among early adults is:
A. accidents. B. cardiovascular disease. C. cancer. D. respiratory disease. E. drug overdose.
Drug therapy for rheumatoid arthritis must be monitored vigilantly in elderly patients because of the increased risk of:
A) cardiovascular disorders B) central nervous system conditions C) gastrointestinal diseases D) all of the above