Definitions Part I Flashcards
Respiratory system
Organ system that carries out gas exchange; includes the nose, pharynx, larynx, trachea, bronchi, and lungs
Nose
The only external organ of the respiratory system
Nostrils; nares
Either of the two external openings of the nasal cavities that admit air to the lungs
Nasal cavity
Space within the skull posterior and inferior to the nose
Nasal septum
Midline dividing the nasal cavity
Conchae
Projections from the walls of the nasal cavity that increase air turbulence and surface area of mucous membrane exposed to air to aid in warming and moistening
Palate
Roof of the mouth
Hard palate
Roof of mouth formed by the fusion of two maxillae bones
Soft palate
Portion of the roof of the mouth that is not supported by bone
Cleft palate
Failure of the bone forming palate to fuse medially
Paranasal sinuses
Air-filled spaces within the maxillae on either side of the nasal cavity that are lined with mucous membrane → helps lighten the weight of the skull
Rhinitis
Inflammation of the nasal mucosa
Sinusitis
Sinus inflammation
Sinus headache
Headaches that may feel like an infection in the sinuses (sinusitis-like)
Pharynx
Muscular tube extending from the posterior of the nasal cavities to the esophagus; throat