至下丘脑尾侧部行于被盖腹侧区及其背外侧，在内侧丘系与大脑脚间。

At caudal hypo-thalamus level, it runs in ventral tegmental area and a region between medial lemniscus and cerebral peduncle.

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骶骨外侧部的营养动脉分别由腹侧、背侧和内侧面进入。

The nutrient arteries of the lateral part of the sacrum enter the bone through its ventral, dorsal and medial aspects.

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