The total cost of health care in the United States is often expressed as a percentage of the country's gross domestic product (GDP). The GDP represents what percentage of the country's income for all goods and services?

When a patient suffers penetrating trauma to the chest, as the diaphragm moves downward, air will:

A) enter the pleural cavity from outside. B) not move into the chest cavity. C) be forced from the chest cavity. D) accumulate in the lungs.

Correcting a life-threatening condition such as external bleeding in elderly patients can be more problematic because:

a. the skin of elderly patients does not rebound as quickly as it does in younger patients. b. the veins of elderly patients have weaker walls than those in younger patients. c. elderly patients may be on Lasix. d. many elder patients are taking warfarin or other blood thinners.