Which of the following statements is true regarding activity in the alveoli? A)Type II pneumocytes are the site of gas exchange. B)Alveolar capillaries constrict when oxygen levels are high. C)Type I pneumocytes produce surfactant. D)Alveolar macrophages collect stray dust particles. E)They are composed of simple cuboidal epithelium.

Question

Quizplus · Accepted Answer

Alveolar macrophages, also known as dust cells, are present in the alveoli and are responsible for collecting and removing any dust or debris that may have entered the lungs. They play a vital role in maintaining the cleanliness of the lungs and preventing infections. The other options are false statements.

Which of the Following Statements Is True regarding Activity in the Alveoli