column翻译成束还是柱？或者是别的？

The spinal cord is a continuation of the medulla at the foramen magna and extends to the conus medullaris at the first or second lumbar vertebra in the vertebral canal in adults. On a cross-sectioned view, the cord is composed of gray matter and white matter. The gray matter resembles the shape of the letter H, surrounds the central canal, and contains cell bodies of neurons. It is divided into four main columns: the dorsal horn, intermediate horn, ventral horn,and lateral horn (see Fig. 18.1) [1]. The white matter contains myelinated and unmyelinated nerve fibers that carry information through the cord. The white matter is divided into the dorsal column (or funiculus), lateral column and ventral column. The cord has four regions (cervical, thoracic, lumbar and sacral) and two bulges at the cervical and lumbar region. The dorsal roots and ventral roots join together to form 31 pairs of spinal nerves that exit from spinal foramen.The spinal cord is surrounded with three meninges: pia,arachnoid, and dura.

column翻译成束还是柱？

脊髓是延髓出枕骨大孔后的延续，在成人椎管内的第一或第二腰椎处成为圆锥。在横切面上，脊髓由灰质和白质组成。灰质类似于字母H的形状，包围着中央管，并包含神经元的胞体。它被分为四个主要的束:背角、中间角、腹角和侧角(见图18.1)[1]。白质包含通过脊髓传递信息的有髓神经纤维和无髓神经纤维。白质分为背侧束(或索)、侧束和腹侧束。脊髓有颈、胸、腰、骶4个区，颈、腰有2个前突。背根和腹根从椎孔中出来后交织在一起形成31对脊神经。脊髓周围有三层脑膜：软脑膜、蛛网膜和硬脑膜。