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5 Cards in this Set
- Front
- Back
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What is the blood-air barrier?
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the cells and cell products across which gases must diffuse between alveolar and capillary components. It exists to prevent air bubbles form forming in the blood, and from blood entering alveoli
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What is blood-air barrier composed of ?
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1. layer of surfactant
2. cytoplasm of type 1 pneumocyte 3. fused basal lamina of alveolar/endothelial cell 4.cytoplasm of endothelial cell |
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Where does most gas exchange occur at blood-air barrier?
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most gas exchange occurs at thin portion
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What occurs at thick portion of blood-air barrier?
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thought to be site at which tissue fluid can accumalate and even cross into alveolus.
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What type of capillary in barrier?
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see CVS lecture.............
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