关节突关节是位于脊柱背侧两个椎体间的一对小关节。

Facet joints are pairs of small joints between the vertebrae in the back of the spine.

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这种用前肢踩踏的训练，一个小时内就可以在两侧运动皮层的椎体神经元上形成突触后“树枝状小棘”的结构。

Training in a forelimb reaching task leads to rapid (within an hour) formation of postsynaptic dendritic spines on the output pyramidal neurons in the contralateral motor cortex.

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在每一侧，神经根从椎管分出，通过椎体后方的椎间孔离开脊柱。缴。

On each side, a nerve root branches off and exits the spine through a space in the back of the vertebra called the foramen.

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