The Main Mechanism by Which Ephedrine Helps in the Treatment

question 27

Multiple Choice

The main mechanism by which ephedrine helps in the treatment of asthma is that it

• A)causes the smooth muscles surrounding bronchial passages to relax.
• B)increases tension in the smooth muscles surrounding bronchial passages, thus increasing responsiveness of these muscles to demand.
• C)increases the blood flow from the heart to the lungs by stimulating release of norepinephrine.
• D)decreases heart rate and the force with which it pumps.

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Definitions:

U.S. Consumption

This term refers to the total value of all goods and services consumed within the United States over a specific time period.

Government Purchases

Expenditures by the government on goods and services that directly consume resources or are used in the production of public services.

GDP

Stands for Gross Domestic Product, which is the total value of all goods and services produced within a country's borders in a specific time period and a key indicator of economic health.

Net Exports

The financial difference between what a country sells abroad and what it buys from other countries, representing its trade balance.