Anatomy of Nose Pharynx Mouth Larynx: This region includes the nasal cavity (for air intake and filtration), pharynx (shared air and food passage), oral cavity (chewing and speech), and larynx (voice production and airway protection).
Divisions of the Pharynx: The pharynx is divided into the nasopharynx (air passage), oropharynx (shared air and food passage), and laryngopharynx (leading to the esophagus and larynx).