問題詳情

4.The_layer of the GI tract wall contains glands, blood vessels and nerves, whereas the__layer is the outermost layer that protects the GI tract.
(A)mucosa, muscle
(B)serosa, submucosa
(C)submucosa, muscle
(D)submucosa, serosa

參考答案

答案:[無官方正解]
難度:適中0.5
統計:A(0),B(0),C(0),D(0),E(0)

內容推薦