Ciliated respiratory epithelial cells (cilia or small hairs that beat in concert to sweep antigen back out of the body cavities) facilitate the removal of bacteria and other foreign antigens from ...

The trachea has a number of adaptations: cartilage rings in the walls of the trachea help to keep it open ciliated epithelium and goblet cells to ... parts of the respiratory system as shown ...

pneumoniae and/or other inflammatory mediators) of the cell-mediated immune reaction are initially produced at the primary inflammatory sites of the upper respiratory tract during the incubation ...