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Paij Porter

Anatomy- Respiratory Tract

TermDefinition
upper respiratory tract composed of nose, nasopharynx, oropharynx, laryngopharynx, and larynx
lower respiratory tract composed of the trachea, all segments of the bronchial tree, and the lungs
respiratory mucosa mucous membrane that possesses a rich blood supply, especially over the inferior turbinate, and is bright pink or red
vibrissae Coarse hairs found in the skin of the vestibule. serve as an initial “filter” that screens particulate matter from air that is entering the system
pharynx throat; Conducts air between nasal cavity and larynx
larynx voice box; Conducts air between the pharynx and trachea, prevents food from entering lower airways, and ciliary escalator removes contaminants
epiglottis Flexible “lid” of larynx; Flexes during swallowing to cover larynx and prevent food from entering lower airways
trachea aka windpipe; Conducts air between the larynx and bronchi. Ciliary escalator removes contaminants
respiratory membrane The barrier across which gases are exchanged between alveolar air and blood
surfactant helps reduce surface tension—the force of attraction between water molecules—of the fluid.
alveoli Microscopic air spaces at terminals of bronchial tree; Lined with simple squamous epithelium that joins with pulmonary capillary endothelium to form the respiratory membrane
lungs cone-shaped organs; the lungs perform two functions—air distribution and gas exchange
visceral pleura membrane that covers the outer surfaces of the lungs
laryngitis inflammation of the mucous lining of the larynx, can result in lack of or hoarseness of voice
nasal cavity Lumen of nose, separated into left and right portions by nasal septum supported by cartilage, vomer, and perpendicular plate of ethmoid; supported laterally by nasal conchae
Created by: paijwright
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