鳥類の呼吸法の正しい理解に向けて(生物,一般講演)

概要

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Birds have special lungs augmented by several air sacs. One important feature of the avian pulmonary system lies in their gas-exchange tissues that consist of the air and blood capillary networks. The cross-flow model prevails so far: the direction of the blood flows is perpendicular to the direction of the air flows in the parabronchi. This model, however, does not match the anatomical evidence: the direction of the blood flows is not transverse to the direction of the air flows. To solve this discrepancy the centrifugal-centripetal counter-flow model is proposed and solved analytically, whilst the centrifugal parallel-flow model is also analysed: comparison of these results shows the excellence of the centrifugal-centripetal counter-flow model, which is close to the anatomical evidence. The new model leads to several new formula on the terminal partial-pressures in the lungs and the veins and arteries.
日本流体力学会の論文
2008-09-04