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).
The Trachea: The trachea, or windpipe, is a rigid tube reinforced with C-shaped cartilage rings that conducts air from the larynx to the bronchi while keeping the airway open.