Which of the following are part of the upper respiratory system? (Select all that apply)
Pharynx
Nasal cavity
Bronchial tree
Larynx
Trachea
Correct Answer : A,B,D
A. Pharynx: The pharynx (throat) is part of the upper respiratory tract and functions as a passageway for both air and food.
B. Nasal cavity: The nasal cavity is the main entryway for inhaled air and is part of the upper respiratory system.
C. Bronchial tree: The bronchial tree is part of the lower respiratory system, beginning with the bronchi and branching into bronchioles.
D. Larynx: The larynx (voice box) is part of the upper respiratory system; it connects the pharynx to the trachea.
E. Trachea: The trachea (windpipe) is part of the lower respiratory system.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. 90-95%: acceptable in some chronic conditions, but not the ideal normal.
B. 95-100%: this is the normal range for oxygen saturation in healthy adults.
C. 86-89%: indicates hypoxemia.
D. 80-85%: severely hypoxic, needs medical attention.
Correct Answer is A
Explanation
A. CO₂: High CO₂ (hypercapnia) stimulates the respiratory center to increase breathing.
B. Volume: Blood volume doesn't directly affect respiratory rate.
C. Bilirubin: This is associated with liver function and jaundice, not respiration.
D. Calcium: Calcium levels affect muscle function, not the breathing rate directly.
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