Gelderd J B, Chopin S F
Anat Rec. 1977 May;188(1):45-7. doi: 10.1002/ar.1091880106.
Several dissections were performed to determine the level of spinal cord termination and the vertebral level at which the dorsal and ventral roots of spinal nerves C1-S4 emerged from the spinal cord in the rat. These levels of emergence were then compared to the level of exit from the vertebral canal. The dissections demonstrated that the effect of differential growth between spinal cord and vertebral column begins in the lower cervical region and becomes progressively more pronounced throughout thoracic and lumbar levels. The disparity between the vertebral level of emergence of spinal roots from the spinal cord and their level of exit via intervertebral foramina was found to be considerably larger than was previously reported by Greene ('68). It was further noted that the spinal cord terminated at the level of the intervertebral disc between the third and fourth lumbar vertebrae, not between the fourth and fifth lumbar vertebrae as reported by Greene ('68).
进行了几次解剖，以确定大鼠脊髓终止的水平以及脊髓神经C1-S4的背根和腹根从脊髓发出的椎骨水平。然后将这些发出水平与从椎管穿出的水平进行比较。解剖表明，脊髓和脊柱之间的差异生长效应始于下颈部区域，并在整个胸段和腰段逐渐变得更加明显。发现脊髓神经根从脊髓发出的椎骨水平与其通过椎间孔穿出的水平之间的差异比格林（1968年）先前报道的要大得多。还进一步注意到，脊髓终止于第三和第四腰椎之间的椎间盘水平，而不是格林（1968年）报道的第四和第五腰椎之间。
