5.下列何者在胚胎發育早期開口至卵黃囊(yolk sac)?
(A)口管(stomodeum)
(B)前腸(foregut)
(C)中腸(midgut)
(D)後腸(hindgut)
答案:登入後查看
統計: A(70), B(220), C(321), D(46), E(0) #1207081
統計: A(70), B(220), C(321), D(46), E(0) #1207081