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Alveolus
Hollow sphere of cells in the lungs where oxygen and carbon dioxide are exchanged
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Apex
Rounded top of each lung
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Bronchiole
Small tubular air passage that branches of from a bronchus and then branches into several alveoli. Its wall contains smooth muscle.
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Bronchus
Tubular air passageway supported by cartilage rings. It forms an inverted Y below the trachea. Each primary bronchus enters a lung and branches into bronchioles. The bronchial tree includes the trachea, bronchi, and bronchioles. Bronchopulmonary refers to the bronchi and the lungs
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Cilia
Small hairs that flow in waves to move foreign particles away from the lungs and toward the nose and the throat where they can be expelled
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Epiglottis
Lidlike structure that seals off the larynx, so that swallowed food into the esophagus, not into the trachea
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Hilum
Indentation on the medial side of each lung where the bronchus, pulmonary arteries, and nerves enter the lung and the pulmonary veins exit
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Larynx
Structure that contains the vocal chords and is a passageway for inhaled and exhaled air. Its known as the voice box
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Lobe
Large division of a lung, visible on the outer surface
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Lumen
Central opening through which air flows inside the trachea , a bronchus, or a bronchiole
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Lung
Organ of respiration that contains alveoli
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Parenchyma
Functional part of the lung (i.e., the alveoli) as opposed to the connective tissue framework
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Surfactant
Protein-fat compound that reduces surface tension and keeps the walls of the alveolus from collapsing with each exhalation
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Trachea
Vertical tube with C-shaped rings of cartilage in it. Its an air passageway between the larynx and the bronchi
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alveol/o-
Alveolus (air sack)
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glott/o-
Glottis (of the larynx)
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hil/o-
Hilum (indentation in an organ)
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laryng/o-
Larynx (voice box)
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trache/o-
Trachea (windpipe)
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