How is most oxygen transported in the blood?
Dissolved in plasma
By hemoglobin
By bicarbonate
By pulmonary surfactants
The Correct Answer is B
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.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. Inferior/lower right lobe: Label #11 is on the right lung (viewer’s left side) and in the lower portion. This location corresponds to the inferior (lower) lobe of the right lung.
B. Superior/upper right lobe: this is labelled as #1.
C. Middle lobe: the right lung has three lobes: superior, middle, and inferior.
D. Superior/upper left lobe: this is labelled as #6.
Correct Answer is A
Explanation
A. Cyanosis: Cyanosis is a common sign of hypoxia caused by low oxygen levels in the blood.
B. Bradycardia: Hypoxia typically causes tachycardia, not bradycardia.
C. Pallor: Pallor may indicate anemia or poor circulation, not specifically hypoxia.
D. Bradypnea: Hypoxia usually triggers an increased respiratory rate (tachypnea), not bradypnea.
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