阿摩線上測驗
52. How does countercurrent exchange in fish gills enhance oxygen absorption?
(A) Blood and water flow oppositely, maximizing oxygen diffusion
(B) Water flows faster, increasing oxygen intake
(C) Blood absorbs oxygen actively, not passively
(D) Gills store oxygen for later use
(E) Oxygen moves from low to high concentration
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統計： A(37), B(2), C(0), D(0), E(0) #3429731
統計： A(37), B(2), C(0), D(0), E(0) #3429731
詳解 (共 2 筆)
123
#7371578
逆流交換系統：
本題魚類藉由逆流交換系統，經由血流和水流方向相反的機制，使鰓的氧氣濃度梯度穩定，以達最大化促進氧氣擴散至血中
其他逆流的機制：亨利氏環、鳥類腿部保溫
比較：鳥類呼吸是靠cross current system
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