The Number of U

question 3

Multiple Choice

The number of U.S. households with access to the Internet is growing rapidly. Compared to 50 years ago, one would predict that when considering a major purchase, people today will gather:

• A)less information because the Internet has lowered the cost of gathering information.
• B)less information because the Internet has increased the benefit of gathering information.
• C)more information because the Internet has lowered the cost of gathering information.
• D)more information because the Internet has increased the cost of gathering information.

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Definitions:

Aortic Semilunar Valve

A valve in the heart that lies between the left ventricle and the aorta, preventing backflow of blood into the ventricle.

Pulmonary Trunk

A major blood vessel that carries blood from the heart’s right ventricle to the lungs for oxygenation.

Pulmonary Arteries

are the arteries that carry deoxygenated blood from the heart to the lungs for oxygenation.

Myocardial Contraction

The phase of the cardiac cycle during which the heart muscle contracts, forcing blood out of the chambers.