Perfusion is BEST described as the:
A) delivery of oxygen to the alveoli to be picked up by the white blood cells.
B) adequate number of hemoglobin molecules to carry oxygen to the cells.
C) delivery of adequate oxygenated blood to the cells to meet their metabolic needs.
D) exchange of oxygen and carbon dioxide between the lungs and the blood.
Answer: C
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Simple spirometry CANNOT be used to measure the
A. vital capacity B. residual volume C. tidal volume D. inspiratory reserve volume
A comparison of functional residual capacity measured by body plethysmography with that measured by
nitrogen washout reveals that the measurement obtained during the nitrogen washout test is less than that during body plethysmography. This discrepancy is most likely caused by which of the following? a. Poor technique c. Restrictive lung disease b. Severe air-trapping d. Directional valve malfunction