What are the Pores of Kohn responsible for?

• A. Bringing oxygen to the blood
• B. Facilitating gas exchange
• C. Allowing gas and macrophages to travel between alveoli
• D. Regulating airway diameter

Answer: (C)

The Pores of Kohn are small openings that connect adjacent alveoli within the lungs. Their primary function is to facilitate the movement of gases, as well as allowing macrophages to traverse between adjacent alveolar spaces. This movement helps to equalize pressure across the alveoli and maintains the lung's structural integrity by promoting uniform expansion during respiration.

Furthermore, the presence of macrophages in these pores plays a crucial role in the immune response, enabling the clearance of pathogens and particulate matter. By facilitating this inter-alveolar communication, the Pores of Kohn ultimately support both gas exchange and immune defense, contributing to overall pulmonary health.

Other options illustrate functions related to gas transport and airway regulation, which are not the primary roles of the Pores of Kohn. Rather, the unique feature of these pores is their facilitation of gas and immune cell movement between alveoli, which is essential for maintaining efficient lung operation and host defense.