LCD Monitors Require a Backlight

question 23

True/False

LCD monitors require a backlight.

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Definitions:

Upper Esophageal Sphincter

The muscular ring located at the top of the esophagus that controls the passage of food into the esophagus from the throat.

Pharyngeal Phase

A phase in the swallowing process where the bolus is moved from the mouth to the esophagus involving the contraction of pharyngeal muscles.

Esophageal Phase

A phase of swallowing during which the bolus moves from the esophagus into the stomach, involving coordinated muscular contractions.

Voluntary Phase

The initial stage of swallowing controlled consciously, where food is pushed by the tongue into the throat.