Which of the Following Statements Are True of the Upper

Which of the following statements are true of the upper respiratory tract? (Read carefully and select all of the correct statements.)

A) The stratified squamous epithelium of the nasal mucosa is a good barrier to pathogens.
B) The nasopharynx and oropharynx are air passages only.
C) The tonsils are the lymphatic tissue of the pharynx.
D) The nasal mucosa warms and moistens inhaled air.
E) The conchae increase the surface area of the nasopharynx.
F) The laryngopharynx opens into the larynx and the esophagus.