posterior spinal artery

The feeders include anterior spinal artery and its branches, and simultaneously it is frequently fed by posterior spinal artery.

其供血动脉为脊髓前动脉及其分支，脊髓后动脉也经常同时参与供血。

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Methods: The origin, branch and distribution of the posterior rami of spinal nerves and the dorsal branches of the segmental artery, vein in the thoracolumbar region were observed on 10 adult specimens.

方法：选用10具经防腐固定，在解剖显微镜下对胸腰段脊柱后部结构进行逐层解剖，重点观测脊神经后支及其分支、脊柱节段动静脉的后支的来源、走行以及分布规律。

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Results: 1.The segmental artery sent off a spinal branch which transversed the intervertebral foramen and divided into anterior and posterior radiculomedullary arteries.

结果：①节段动脉在肋横突关节内侧椎间孔部发出根髓动脉。

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