A Lead Apron and a Thyroid Collar

question 23

Multiple Choice

A lead apron and a thyroid collar:

• A)are used 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.

---

Definitions:

Supply Curve

A supply curve graphically represents the relationship between the price of a good and the quantity of the good that producers are willing and able to supply, typically sloping upwards.

Demand Curve

A graph showing the relationship between the price of a good and the quantity demanded by consumers, typically sloping downward from left to right.

Tax

An obligatory fiscal contribution or another form of assessment enacted by a governmental body on individuals or entities, aimed at generating revenue for government activities and public spending.

Equilibrium Price

The price at which the quantity of a good demanded by consumers equals the quantity supplied by producers, resulting in a stable market condition.