試題詳解

87. 以下有關食道肌肉層之敘述 (1)muscularis mucosa 中全部為 smooth muscles fibers. (2)兩層肌肉層，外層為 longitudinal layer；內層為 circular layer. (3)在 tracheal bifurcation 以下之食道，通常無 striated muscle. (4)cervical esophagus 僅有 striated muscle.
(A)僅(1)(2)(3)正確
(B)僅(1)(3)正確
(C)僅(2)(4)正確
(D)(1)(2)(3)(4)皆正確