Which of the Following Statements Are True of the Pharynx

question 4

Multiple Choice

Which of the following statements are true of the pharynx and esophagus (Select all that apply) ?

• A)Peristalsis of the esophagus is part of the swallowing reflex.
• B)The oropharynx and laryngopharynx are passageways for both food and air (at different times).
• C)The lower esophageal sphincter (LES)is usually contracted,except when something is swallowed.
• D)No digestion takes place in the pharynx or esophagus.

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