If pathogens evade the defenses of the upper respiratory tract and enter the alveoli,_______ can protect the body from infection.

Question

Quizplus · Accepted Answer

When pathogens enter the alveoli, macrophages are the primary cells responsible for phagocytosis and removing the infectious agents. Histiocytes are a type of macrophage found in connective tissue, but they are not typically found in the alveoli. NK cells are primarily responsible for killing infected cells, but they are not as effective in directly fighting off infectious agents like macrophages are. Goblet cells are responsible for producing mucus in the respiratory tract, but they do not play a significant role in defending against pathogens in the alveoli.

If Pathogens Evade the Defenses of the Upper Respiratory Tract