Which of the following is a structure that protects the airway during the process of swallowing?
Trachea
Epiglottis
Uvula
Pharynx
The Correct Answer is B
A. The trachea is the windpipe that carries air to the lungs. While it plays a role in respiration, it does not protect the airway during swallowing.
B. The epiglottis is a flap of cartilage that covers the trachea during swallowing, preventing food or liquid from entering the airway and directing it to the esophagus.
C. The uvula is part of the soft palate that helps in the swallowing process but does not directly protect the airway. It assists in preventing food from entering the nasal cavity.
D. The pharynx is the passageway for both air and food, but it does not provide protection to the airway during swallowing. The epiglottis is the main structure responsible for this protection.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. The pulmonic valve separates the right ventricle from the pulmonary artery, controlling blood flow to the lungs, not the right atrium from the right ventricle.
B. The tricuspid valve separates the right atrium from the right ventricle, allowing blood to flow from the atrium into the ventricle before it is pumped to the lungs.
C. The aortic valve separates the left ventricle from the aorta, controlling blood flow from the heart to the body, not between the atrium and ventricle.
D. The mitral valve separates the left atrium from the left ventricle, controlling blood flow in the left side of the heart.
Correct Answer is D
Explanation
A. An increased pulse is a later symptom of dehydration, as the body attempts to maintain blood pressure and circulation when fluid levels are low.
B. Poor skin turgor is a sign of more advanced dehydration and is usually detected when skin remains tented after being pinched.
C. Decreased urinary output typically occurs as dehydration progresses and the body conserves water, but it is not usually the first sign.
D. Thirst is one of the earliest and most common symptoms of dehydration, as the body signals the need for water intake to restore fluid balance. This is the correct answer.
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