outpouching

基本解释

These are not derived from the neural crest, instead an outpouching of the neural tube generates the optic cup which, in turn, forms the retina.
不过视网膜上皮的黑色素细胞是其中的例外，它们并非由神经脊产生，而是在神经管外囊生成的视杯产生。
Lipomyelomeningocele is an uncommon congenital anomaly, resulting from outpouching of spinal cord and its surrounding leptomeninges through the bony defect of spina bifida.
脂肪脊髓脊膜膨出是一种罕见的先天异常，源于脊髓及脊膜经由脊柱裂而向外突出。
type IV: only outpouching aneurysm from the supraclinoid ICA without visualization of the PCoA.
第四类型：只看到外突的动脉瘤而看不到后交通动脉。