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Language of Medicine Chapter 12- key words

Chabner's Language of Medicine 9th edition. Key vocabulary words for Chapter 12- the respiratory system.
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adenoids
lymphatic tissue in the nasopharynx; pharyngeal tonsils
alveolus
air sac in the lung
apex of the lung
tip or uppermost portion of the lung. An apex is the tip of a structure.
base of the lung
Lower portion of the lung
bronchioles
smallest branches of the bronchi. Terminal bronchioles lead to alveolar ducts.
bronchus
branch of the trachea (windpipe) that is a passageway into the lung; bronchial tube.
carbon dioxide
gas produced by body cells when oxygen and food combine; exhaled through the lungs.
cilia
thin hairs attached to the mucous membrane epithelium lining the respiratory tract. They clear bacteria and foreign substances from the lung.
diaphragm
muscle separating the chest and abdomen. It contracts and relaxes to make breathing possible.
epiglottis
lid-like piece of cartilage that covers the larnyx, preventing food from entering the larynx and trachea during swallowing.
expiration
breathing out; exhalation
hilum
midline region where bronchi, blood vessels, and nerves enter and exit the lungs
inspiration
breathing in (inhalation)
larynx
voicebox; containing the vocal cords
mediastinum
region between the lungs in the chest cavity. It contains the trachea, heart, aorta, esophagus, and bronchial tubes.
nares
openings through the nose carrying air into the nasal cavities
oxygen
gas that passes into the bloodstream at the lungs and travels to all the body cells.
palatine tonsil
one pair of almond-shaped masses of lymphatic tissue in the oropharynx.
paranasal sinus
one of the air cavities in the bones near the nose.
parietal pleura
outer fold of pleura lying closer to the ribs and chest wall
pharynx
throat; including the nasopharynx, oropharynx, and laryngopharynx
pleura
double-folded membrane surrounding each lung
pleural cavity
space between the folds of the pleura
pulmonary parenchyma
essential parts of the lung, responsible for respiration; bronchioles and alveoli
respiration
process of moving air into and out of the lungs; breathing
trachea
windpipe
visceral pleura
inner fold of pleura lying closer to the lung tissue
lobe
division of a lung
External respiration
The exchange of gases in the lung
Internal respiration
The exchange of gases in the tissue cells