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The lower part of the SPINAL CORD consisting of the lumbar, sacral, and coccygeal nerve roots.

The spinal marrow, at its termination, about the second lumbar vertebra, gives off a considerable number of nerves, which, when unravelled, resemble a horse's tail; hence the name; (F.) Queue de Cheval, Q. de la Moelle Epiniere. See Medulla Spinalis.

A bundle of nerves at the distal end of the spinal canal.

The genus Equisetum.