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 B
Explanation
A. Dissolved in plasma- only ~1.5% of oxygen is dissolved in plasma.
B. By hemoglobin- ~98.5% of oxygen binds to hemoglobin in red blood cells.
C. By bicarbonate- this primarily transports carbon dioxide, not oxygen.
D. By pulmonary surfactants- surfactant reduces surface tension in alveoli, not related to oxygen transport in blood.
Correct Answer is D
Explanation
A. Inferior/lower left lobe: The left lung is on the viewer’s right. The lower lobe of the left lung is positioned inferiorly (near the diaphragm) and would be closer to label #8.
B. Middle lobe: The middle lobe is only present in the right lung and lies below the superior lobe but above the inferior lobe.
C. Superior/upper right lobe: Label #1 is at the top part of the right lung.
D. Superior/upper left lobe: The left lung has only two lobes: superior and inferior. The superior lobe of the left lung would be in the corresponding location to label #6.
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