What keeps the bolus from entering the larynx during deglutition?
A. the epiglottis
B. the uvula
C. the tongue
D. the upper esophageal sphincter
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Question 2) The portion of the digestive tract that receives food directly from the oral cavity is the
A. nasopharynx.
B. oropharynx.
C. laryngopharynx.
D. esophagus.
E. larynx.
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Question 3) Which of the following might happen if a person begins laughing while swallowing a liquid?
A. laryngeal constriction forcing liquid through the pharynx
B. relaxation of the soft palate allowing liquid to enter the nasal cavity
C. the tongue might be swallowed
D. nothing - swallowing will be normal
E. peristalsis will not begin
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Question 4) Which of the following is the correct order for the phases of deglutition?
A. pharyngeal, voluntary, esophageal
B. esophageal, pharyngeal, voluntary
C. voluntary, pharyngeal, esophageal
D. voluntary, esophageal, pharyngeal
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Question 5) Which of the following statements regarding swallowing is true?
A. The voluntary phase begins in the pharynx.
B. In the pharyngeal phase, food is moved through the pharynx.
C. The uvula rises during the esophageal phase.
D. Peristalsis occurs in all phases of swallowing.
E. Breathing occurs during swallowing.
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Question 6) Food is prevented from entering the nasal cavity during swallowing by the
A. epiglottis.
B. palatine tonsils.
C. tongue.
D. soft palate.
E. hard palate.
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Question 7) What structure moves food from the pharynx to the stomach?
A. larynx
B. laryngopharynx
C. esophagus
D. epiglottis
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Question 8) How does the muscularis layer of the esophagus differ from the rest of the digestive tract?
A. it is all skeletal muscle
B. the superior part is skeletal muscle
C. the inferior part is skeletal muscle
D. it has alternating smooth and skeletal muscle sections
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Question 9) The epiglottis covers the opening into the larynx during
A. the voluntary phase of swallowing.
B. the pharyngeal phase of swallowing.
C. the esophageal phase of swallowing.
D. the gastric phase of swallowing.
E. the oral phase of swallowing.
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Question 10) Why does the superior part of the esophagus contain skeletal muscle instead of smooth muscle?
A. The first phase of swallowing is under involuntary control.
B. The second phase of swallowing is under voluntary control.
C. The first phase of swallowing is under voluntary control.
D. The second phase of swallowing is under involuntary control.
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