collection the lymh tissue in the nasopharynx; likewise called pharyngeal tonsils
alveolus (plural: alveoli)Air sac in the lung
apex that the lungUppermost section of the lung. Apical method pertaining come the apex.

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base that the lunglower section of the lung
bronchiolessamllest branches that the bronchi
bronchus (plural: bronchi)branch that the trachea (windpipe) that acts as a passageway into the wait spaces of the lung; bronchial tube
carbon dioxide (CO2)A gas produced by human body cells as soon as oxygen and also food combine; exhaled through the lungs.
ciliathin hair attached to the mucous membrane epithelium lining the respiratory tract.
diaphragmmuscle separating the chest and also abdomen. The is the most crucial muscle because that breathing.
epiglottisLid-like item of cartilage that covers the larynx.
exhalationbreathing the end (expiration)
external respirationexchange of gases in the lungs.
glottisthe opening to the larynx
hilum (of lung)midline region where the bronchi, blood vessels, and also nerves enter and also exit the lungs. Hilar means pertaining come the hilum.
inhalationbreathing in (inspiration)
internal respirationexchange the gases in ~ the organization cells
larynxvoice box
lobesdivisions that the lungs
mediastinumregion in between the lungs in the chest cavity. It includes the trachea, heart, aorta, esophagus, and also bronchial tubes
oxygen (O2)Gas that pases into the bloodstream in ~ the lungs and travels to all body cells
palatine tonsilsrounded masses of lymph tissue in the oropharynx (palatine way roof the the mouth)
paranasal sinusesair-containing cavities in the bones close to the nose.
parietal pleurathe external fold the pleura lie closest to the ribs and wall surface of the thoracic cavity.

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pharynxthroat; created of the nasopharynx, oropharynx, and also laryngopharynx
pleuradouble-folded membrane bordering each lung
pleural cavityspace between the wrinkle of the pleura
pulmonary parenchymathe vital cells the the lung, those performing its key function; the air sacs (alveoli) and little bronchioles.
visceral pleurathe inner wrinkles of pleura lie closest to the lung tissue