Which Positioning Line Is Perpendicular to the IR for a PA

question 30

Multiple Choice

Which positioning line is perpendicular to the IR for a PA projection of the mandible?

• A)OML
• B)AML
• C)IOML
• D)GAL

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Definitions:

Brain

The organ in the head of humans and other vertebrates responsible for thought, memory, emotion, touch, motor skills, vision, breathing, temperature, hunger, and every process that regulates our body.

White

A color that results from the reflection of all the rays of visible light, symbolizing purity or cleanliness in many cultures.

Outermost Layer

The surface layer or the most external layer of an object or structure, such as the epidermis on the human body or the outer layer of a planet.

Eye

The organ of vision that detects light and sends signals through the optic nerve to the brain.