在外胚层，神经管正在形成，在此基础上，婴儿的神经系统——大脑、脊髓、皮肤和毛发——将会形成。
In the outer layer (ectoderm) the neural tube is forming from which the baby's nervous system-brain spinal cord skin and hair-will develop.
在外胚层，神经管正在形成，在此基础上，婴儿的神经系统——大脑、脊髓、皮肤和毛发——将会形成。
In the outer layer (ectoderm) the neural tube is forming, from which the baby's nervous system-brain, spinal cord, skin and hair-will develop.
如果您在怀孕前或者怀孕的前几个星期内，也就是在神经管开始形成脑和脊髓的时期，叶酸可以起很重要的作用。
Folic acid works, but it only works if taken before and during the first few weeks of pregnancy, when the neural tube is developing into the brain and spinal cord.
神经管可能诱导其他胚胎结构的形成。
The neural tube then might induce the formation of still other embryonic structures.
与颈动脉管外口、舌下神经管外口形成了三角形，出颅的后组脑神经及颈静脉球位于三角形内。
It companied with carotid canal and hypoglossal canal outside hole, and formed triangle that posterior groups nerve and jugular buld existed in.
内侧壁向筛窦、蝶窦内突入形成视神经管隆凸。
The optic canal protrudes into ethmoidal and sphenoid sinuses.
在神经系统中诱导神经管的形成；
本文对229侧胚胎儿周至出生后1年颞骨组织切片连续观测。结果表明，面神经管由膜性化骨和软骨化骨共同形成。
The development of the human facial canal and the facial nerve of 229 temporal sides from 11 weeks fetuses to infancies were studied by histological method.
本文对229侧胚胎儿周至出生后1年颞骨组织切片连续观测。结果表明，面神经管由膜性化骨和软骨化骨共同形成。
The development of the human facial canal and the facial nerve of 229 temporal sides from 11 weeks fetuses to infancies were studied by histological method.
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