Which statement is incorrect?
a. Alveoli are the site of gas exchange in the lungs.
b. Pores of Kohn allow air to flow between adjacent bronchioles.
c. Alveolar Type II cells secrete pulmonary surfactant.
d. Alveoli are very thin and are surrounded by a network of capillaries so that air and blood are separated by a very thin barrier.
e. The alveoli are thin-walled, inflatable, grape-like sacs at the end of the bronchioles.
B
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