The Function of the Lower Esophageal Sphincter Is to ____

question 14

Multiple Choice

The function of the lower esophageal sphincter is to ____.

• A) direct food from the mouth to the esophagus
• B) protect the airway during swallowing
• C) prevent backflow from the esophagus
• D) prevent backflow of acidic contents from the stomach

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Definitions:

Pooled Variance

An estimate of variance across different samples or groups that assumes the underlying population variances are equal.

T-Statistic

A type of test statistic calculated to determine if a hypothesis should be accepted or rejected, commonly used in a t-test to compare means.

Degrees of Freedom

The number of independent values or quantities that can vary in the analysis without breaking any constraints, relevant in statistical tests to assess the validity of the test.

Preservatives

Substances used in food processing and preservation to prevent spoilage and decay caused by microbial growth or undesirable chemical changes.