問題詳情
47.當直立或坐著時，頭部及頸部均高於心臟，此時頭頸靜脈回流的機制，主要是藉由下列那一項作用？
(A)肌肉幫浦作用（skeletal muscle pump）
(B)動靜脈壓力差作用（arteriovenous pressure gradient）
(C)呼吸幫浦作用（respiratory pump）
(D)靜水壓作用（hydrostatic effects）
(A)肌肉幫浦作用（skeletal muscle pump）
(B)動靜脈壓力差作用（arteriovenous pressure gradient）
(C)呼吸幫浦作用（respiratory pump）
(D)靜水壓作用（hydrostatic effects）
參考答案
答案：D
難度：非常困難0.181818
統計：A(3),B(3),C(8),D(4),E(0)
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