35.胚胎正常發育時,奇靜脈根部(root of azygos vein)的起源是:
(A)後主靜脈(posterior cardinal vein)
(B)總主靜脈(common cardinal vein)
(C)前主靜脈(anterior cardinal vein)
(D)下主靜脈(subcardinal vein)
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統計: A(225), B(79), C(84), D(118), E(0) #3378016
統計: A(225), B(79), C(84), D(118), E(0) #3378016