Indicate whether each statement is correct or incorrect regarding alveoli with h
ID: 72835 • Letter: I
Question
Indicate whether each statement is correct or incorrect regarding alveoli with high V/Q ratios.
Hi V/Q ratio alveoli provide most of the oxygenation of the arterial blood due to their high PAO2
Alveoli with high V/Q ratios effectively eliminate CO2 as evidenced by their low PACO2
Hi V/Q ratio alveoli are usually due to the increased distribution of ventilation to apical alveoli
Hi V/Q ratios are normally due to the effect of gravity on perfusion
- A. B.Hi V/Q ratio alveoli provide most of the oxygenation of the arterial blood due to their high PAO2
- A. B.Alveoli with high V/Q ratios effectively eliminate CO2 as evidenced by their low PACO2
- A. B.Hi V/Q ratio alveoli are usually due to the increased distribution of ventilation to apical alveoli
- A. B.Hi V/Q ratios are normally due to the effect of gravity on perfusion
Explanation / Answer
The V/Q ratio (the ventilation/perfusion ratio) is important because the ratio between the ventilation and the perfusion is the factor that affects alveolar levels of oxygen and carbon dioxide.
High V/Q ratio alveoli provide most of the oxygenation of the arterial blood due to their high PAO2- this statement is True.
Alveoli with high V/Q ratios effectively eliminate CO2 as evidenced by their low PACO2 – this statement is true.
High V/Q ratio alveoli are usually due to the increased distribution of ventilation to apical alveoli – this statement is false.
High V/Q ratios are normally due to the effect of gravity on perfusion – this statement is true.