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lympatic tissue in the nasopharynx; pharyngeal tonsils.
adenoids
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air sac in the lung
aveolus; aveoli
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tip or uppermost portion of the lung. An apex is the tip of a structure. apical means pertaining to or at the apex.
apex of the lung
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lower portion of the lung; from the greek basis, foundation. Basilar means pertaining to the base.
base of the lung
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smallest branches of the bronchi. Terminal bronchioles lead to alveolar ducts.
brochioles
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branch of the trachea (windpipe) that is a passageway into the lung; bronchial tube.
bronchus (bronchi)
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gas produced by body cells when oxygen and food combine; exhaled through the lungs.
carbon dioxide (CO2)
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thin hairs attached to the mucous membrane epithelium lining the respiratory tract. they clear bacteria and foreign substances
cilia
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Muscle seperating the chest and abdomen. It contracts and relaxes to make breathing possible.
diaphragm
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Lid-like piece of cartilage that covers the larynx, preventing food from entering the larynx and trachea during swallowing.
epiglottis
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slit-like opening to the larynx
glottis
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midline region where the bronchi, blood vessels, and berves enter and exit the lungs. Hilar means pertaining to or at top of hilum
hilum of the lung
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voice box; containing the vocal cords.
larynx
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region between the lungs in the chest cavity. It contains the trachea, heart, aorta, wsophagus, and bronchial tubes
mediastinum
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openings through the nose carrying air into the nasal cavities
nares
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gas that passes into the bloodstream at the lungs and travels to all body cells.
oxygen (O2)
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one of a pair of almond-shaped masses of lymphatic
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