Question

which of the following statements regarding bronchial tubes is false?
a each bronchus is surrounded by pulmonary capillaries.
b gas exchange occurs across the respiratory membrane.
c the trachea splits into a left and right main bronchus.
d alveoli are located at the tips of bronchioles.

Explanation:

Pulmonary capillaries surround alveoli, not each bronchus. Gas exchange occurs across the respiratory membrane which is related to alveoli. The trachea splits into left and right main bronchi, and alveoli are located at the tips of bronchioles.

Answer:

A. Each bronchus is surrounded by pulmonary capillaries.