Alveoli (Microanatomy) trivia
Alveoli (Microanatomy) Mini Quiz
Test your knowledge with these top questions!
Question 1
What do human alveoli exchange with nearby blood capillaries?
Oxygen crosses the alveolar wall into blood, while carbon dioxide crosses from blood into alveolar air for exhalation.
Question 2
Where do alveoli sit in the human respiratory system?
Bronchioles are small airway branches that lead into alveolar ducts and sacs, where the alveoli cluster.
Question 3
Why do human lungs contain millions of tiny alveoli?
Many small sacs provide more total surface area than one smooth chamber, speeding diffusion between air and blood.
Question 4
What helps human alveoli stay open after exhalation?
Pulmonary surfactant lowers surface tension in the alveolar lining, helping prevent the air sacs from collapsing.