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16 Cards in this Set
- Front
- Back
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What is the conduction zone of the respiratory tree?
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Nose, pharynx, trachea, bronchi, anatomic dead space
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What does the conduction zone do to air?
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Warms, humidifies, filters air
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What is the respiratory zone of the respiratory tree?
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Respiratory bronchioles, alveolar ducts, alveoli
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What does the respiratory zone do?
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Gas exchange
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Where are type 1 pneumocytes found?
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Line the alveoli, 97% of alveolar surfaces
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What do type 1 pneumocytes do?
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Gas exchange
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What is the function of type 2 pneumocytes?
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Secretes pulmonary surfactant, cuboidal and clustered, precursers to type 1 cells
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Which type of lung cells proliferate during lung damage?
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Type 2 pneumocytes
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What is the function of Clara cells?
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Nonciliated, columnar with secretory granules, secrete component of surfactant, degrade toxins
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When does surfactant synthesis begin?
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Week 26 of gestation
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What indicates fetal lung maturity?
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Lecithin-to-sphingomyelin ratio of >2.0
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How many lobes does each lung have?
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R -3
L - 2 |
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What is the most common site of inhaled foreign body?
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Right lung
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What 3 structures perforate the diapragm?
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T8 - IVC
T10 - Esophagus, Vagus T12 - Aorta, thoracic duct, azygos vein I ate ten eggs at noon I8 E10 A12 |
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During quiet respiration, which muscles are responsible for inspiration/expiration?
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Inspiration - diaphragm
Expiration - passive |
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During exercise respiration, which muscles are responsible for inspiration/expiration?
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Inspiration - external intercostals, scalenes, sternocleidomastoids
Expiration - rectus abdominus, internal/external obliques, transversus abdominus, internal intercostals |
