Which of the following are reasons that people breath more rapidly when exercising? Select all that apply.
Increase in need for 02
Decrease in need for 02
Increase in CO2 levels
Increase in RBC production
Decrease in CO2 levels
Correct Answer : A,C
A. Increase in need for O₂: Muscles need more oxygen during exercise, so respiratory rate increases.
B. Decrease in need for O₂: This is incorrect; oxygen needs increase during exercise.
C. Increase in CO₂ levels: Exercise produces more CO₂, which stimulates breathing.
D. Increase in RBC production: This occurs over time in response to chronic hypoxia, not acutely during exercise.
E. Decrease in CO₂ levels: CO₂ levels rise during exercise, prompting faster breathing, not decrease.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. Bronchial tree, carina, apex: These refer to lower airway structures and lung anatomy, not the throat/voice box.
B. Larynx, pharynx, trachea: Larynx = voice box, Pharynx = throat, Trachea = windpipe.
C. Larynx, epiglottis, eustachian tube: The eustachian tube connects the middle ear to the throat; not part of respiratory naming here.
D. Larynx, vocal cords, trachea: Vocal cords are part of the larynx; pharynx (throat) is missing.
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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