The Lining of the Stomach and Intestine Is Protected from Self-Digestion

question 44

Multiple Choice

The lining of the stomach and intestine is protected from self-digestion by:

• A) pepsinogen.
• B) bile.
• C) mucus.
• D) fat.

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Definitions:

Oropharynx

The part of the throat at the back of the mouth behind the oral cavity, including the tonsils.

Laryngopharynx

The lower part of the pharynx just below the oral and nasal cavities, serving as a pathway for food from the mouth and air from the nose.

Nasopharynx

The upper part of the throat located behind the nose, connected to the nasal cavities and the oropharynx.

Nasal Cavity

The hollow space within the nose through which air flows, filtered, warmed, and moistened before reaching the lungs.