The trachea has a number of adaptations: cartilage rings in the walls of the trachea help to keep it open ciliated epithelium ... different parts of the respiratory system as shown here.
These epithelial cells form a protective barrier in the airways, helping to guard the respiratory system while clearing mucus, dust, and other debris. Once inside the cells, the virus replicates, ...
These epithelial cells form a protective barrier in the airways, helping to guard the respiratory system while clearing mucus, dust, and other debris. Once inside the cells, the virus replicates ...