The membranous tissue forming the external covering or integument of an animal and consisting in vertebrates of the epidermis and dermis.
皮，皮肤：形成动物的外皮或覆盖物，并在背椎动物中形成表皮和真皮的膜状组织。
They can also arise in endochondral bone; or primitive mesenchymal cells in the brain, meninges, membranous bone, or soft tissue.
它们可以起源于软骨内骨、或者脑内的间充质细胞、脑膜、膜内成骨或者软组织。
It is formed by the caudal edge of the lateral crus of the lower lateral cartilage, the soft tissue alae, the membranous septum, and the sill of the nostril.
它是由下外侧软骨外侧脚尾侧端，软组织翼，膜性鼻中隔和鼻孔槛共同构成。
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