花药壁由外表皮层，中间纤维层，内部营养层和绒毡层构成。

The anther is made up of an outer epidermis, a middle fibrous layer, and an inner nutritive layer, the tapetum.

youdao

So this cell, wherever it's setting, wherever it is positioned within the nervous system let's say in the cortex somewhere or the outside surface of the brain is able to communicate with a region of the brain that's in this direction, a region in this direction, a region in this direction, a region in this direction.

所以这个细胞 无论它在何处,无论它在神经系统中安身何处,就比方说它位于大脑皮层上吧,即位于大脑外表面上的某处,它可以同,这一方向上的脑域进行交流,也可以是这个方向,也可以是这个方向,也可以是这个方向

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