Diagram of Gas Exchange in Mammalian Lungs : 無料・フリー素材/写真
Diagram of Gas Exchange in Mammalian Lungs / Chic Bee
| ライセンス | クリエイティブ・コモンズ 表示 2.1 |
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| 説明 | By Cruithne9 - Own work, CC BY-SA 4.0, commons.wikimedia.org/w/index.php?curid=50752957A highly diagrammatic illustration of the process of gas exchange in the mammalian lungs, emphasizing the differences between the gas compositions of the ambient air and the alveolar air (light blue) with which the pulmonary capillary blood equilibrates. The blood gas tensions in the pulmonary arterial (blue blood entering the lung on the left) and pulmonary venous blood (red blood leaving the lung on the right, which will circulate throughout the body) are indicated in the diagram. Note that the blood leaving the lungs has the same and values as the alveolar air (light blue). The ventilation of the lungs replaces only about 15% of the functional residual capacity (the 3 liter of air, in light blue, remaining in the lungs after a normal exhalation) per breath. The composition of that air therefore changes very little with each breath. The entire system is regulated by the arterial blood gas homeostat, which keeps the systemic arterial and constant (within very narrow bounds). All the gas tensions are in kPa. To convert to mm Hg, multiply by 7.5. |
| 撮影日 | 2016-10-11 03:29:55 |
| 撮影者 | Chic Bee |
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