The phase of pulmonary ventilation in which air is expelled from the alveoli is:
Inspiration
Inhalation
Compliance
Exhalation
The Correct Answer is D
A. Inspiration is the phase when air is drawn into the lungs and alveoli.
B. Inhalation is synonymous with inspiration, referring to the process of taking air into the lungs.
C. Compliance refers to the ability of the lungs to stretch and expand, not a phase of ventilation.
D. Exhalation (or expiration) is the phase where air is expelled from the alveoli, moving out of the lungs and through the respiratory tract.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. Hypercapnia refers to elevated levels of carbon dioxide (CO₂) in the blood, which can occur due to respiratory problems or insufficient ventilation.
B. Hypoxemia is a condition where there is low oxygen in the blood, not related to carbon dioxide levels.
C. Hypocapnia refers to low levels of carbon dioxide in the blood, often caused by hyperventilation.
D. Hypoxia refers to low oxygen levels in the tissues, not the blood levels of carbon dioxide.
Correct Answer is A
Explanation
A. Hypoxemia specifically refers to low levels of oxygen in the arterial blood, which can lead to tissue hypoxia if not corrected. It is often detected through arterial blood gas (ABG) analysis or pulse oximetry.
B. Excess oxygen in the blood is rare and may occur with supplemental oxygen therapy, but it is not the definition of hypoxemia.
C. Excess oxygen in the tissues is not a standard clinical term and does not relate to the condition known as hypoxemia.
D. Excess carbon dioxide in the blood is called hypercapnia, not hypoxemia.
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