Using the providing diagram, identify the structure labeled as #4.
Larynx
Pharynx
Trachea
Nose
The Correct Answer is B
A. Larynx: The larynx is located below the pharynx and above the trachea. It houses the vocal cords and plays a role in speech. In the diagram, the larynx is likely structure #6, not #4.
B. Pharynx: The pharynx is a muscular passageway for food and air. It lies behind the nasal cavity and mouth, connecting them to the larynx and esophagus. Structure #4 is positioned in that area, making it the correct answer.
C. Trachea: The trachea is the windpipe that extends from the larynx downward into the chest. It is shown lower in the diagram (likely structure #7), not #4.
D. Nose: The nose (including the nostrils and nasal cavity) is the outermost and uppermost part of the respiratory tract. In the diagram, structure #3 appears to represent the nose, not #4.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. Bronchioles- bronchioles are airways that lead to alveoli but are not where gas exchange occurs.
B. Trachea- this is a conduction pathway for air, not where diffusion of gases happens.
C. Pulmonary capillaries- oxygen diffuses across the alveolar membrane into the pulmonary capillaries for transport in the blood.
D. Lungs- this is too broad; gas exchange occurs specifically at the alveolar-capillary membrane.
Correct Answer is B
Explanation
A. A collection of excess fluid within the intrapleural: This describes a pleural effusion, not orthopnea.
B. Difficulty in breathing that is relieved by sitting upright: This is the definition of orthopnea, commonly seen in conditions like heart failure.
C. A bluish color of the skin induced by hypoxemia: This describes cyanosis, not orthopnea.
D. A lung infection like pneumonia: Pneumonia is a specific infection, not a description of breathing difficulty in certain positions.
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