A Lead Apron and a Thyroid Collar

question 23

Multiple Choice

A lead apron and a thyroid collar:

• A)are utilized for a full mouth series of films but are not necessary for single periapical films.
• B)must be used on all patients for all exposures.
• C)are required for pediatric patients but is optional for adults.
• D)are mandated only for pregnant women.

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Definitions:

Scarcity

A fundamental economic problem of having seemingly limitless human wants in a world of limited resources.

Choices

Decisions made by individuals or organizations among two or more alternatives.

Resources

The total means available for economic and political development, such as minerals, labor force, and financial wealth.

Depression

A harsh and long-lasting decline in economic operations, featuring a marked decrease in the GDP, rising unemployment figures, and continued decrease in prices.