Objective: To study the scanning electron microscopic (SEM) characteristics of floor between lateral recess and lateral aperture of the fourth ventricle in the mice with vascular dementia (VD).

目的：观察血管性痴呆（VD）小鼠第四脑室外侧隐窝与外侧孔之间室管膜游离面扫描电镜特征。

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Additionally, the accessory cartilages connect each lateral crus to the piriform aperture.

此外，附件软骨还将外侧脚与梨状孔连在一起。

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Drainage occurs dynamically along the lateral aspect of the nose, cephalad to the lateral crus, toward the piriform aperture and parotid lymph nodes.

沿着鼻侧面向外侧脚头侧，引流至梨状孔和腮腺淋巴结。

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