Which of the following is incorrect if blood flow to an area of the lungs is reduced while airflow remains normal?
a. The concentration of CO2 in this area decreases.
b. The change in CO2 concentration causes smooth muscles of the local airways to relax.
c. The change in CO2 concentration leads to increased resistance of local airways.
d. The change in O2 concentration leads to dilation of local blood vessels.
e. The change in O2 concentration leads to decreased vascular resistance.
B
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Type I alveolar cells secrete pulmonary surfactant.
Answer the following statement true (T) or false (F)
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