Bilateral oal thickenings of the surface ectoderm, called nasal placodes, then deelop on each side of the inferior part of the frontonasal prominence.

外胚层表面呈双边卵圆形增厚形成鼻板，然后发展成为额鼻隆起的下半部分。

In addition, the right hepatic vein was not an accurate indicator of the position of the right interlobar fissure especially in the superior part and inferior part.

肝右静脉不是右叶间裂的准确定位标志，尤其在其上份和下份。