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11 Cards in this Set
- Front
- Back
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During inspiration:
Volume of alveoli ... alveolar pressure ... total cross-sectional area ... velocity through respiratory passages ... From the respiratory bronchioles on down, the process of ... determines the velocity |
increases
decreases increases decreases diffusion |
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Is ventilation the best at the apex or the base?
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base
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... pressure = the pressure that keeps the alveoli open
There is a greater distending force at the apex than at the base of the lungs. That means that the alveoli at the ... of the lung are larger. |
transpulmonary
apex |
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At RV, most of the air goes to the ...
At FRC, most of the air goes to the ... At TLC, most of the air goes to the ... |
apex
base base and apex equally |
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Regional Ventilation Distribution as seen by the single breath nitrogen washout test:
i – mostly O2 from ... ii – decreased ..., increased ... iii (alveolar plateau) – N2 from ... of lungs iv – N2 from ... of lungs |
anatomical deadspace
O2, N2 base apex |
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Aging is more similar to a/an ... disease because w/ increasing age, you start to lose ... tissue
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obstructive
elastic |
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Local alveolar ventilation (ml/sec) depends on what 2 things?
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lung compliance and airway resistance
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Normal dead space of a tidal volume = ~...%
Under pathology, it will increase |
30
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look at slide 16
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ok
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During inspiration:
1. Inspiratory muscles contract 2. thoracic cavity ... 3. Ppl (pleural pressure) becomes more ... 4. Ptrans ... 5. the lung ... 6. P(A) becomes ... than P(B) barometric pressure 7. Air flows into lungs until PA ... PB |
expands
negative increases inflates less equals |
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During Expiration:
1. Inspiratory muscles relax (no ... required) 2. Rib cage ... 3. Ppl becomes ... negative 4. Ptrans ... 5. the lung ... 6. PA becomes ... than PB 7. Air flows out of lungs until PA ... PB |
work
drops less decreases deflates greater equals |
