Nerve Roots

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“The spinal cord and nerve-roots. A, a small portion of the cord seen from the ventral side; B, the same seen laterally; C, a cross-section of the cord; D, the two roots of a spinal nerve; 1, ventral fissure; 2, dorsal fissure; 3, surface groove along the line of attachment of the ventral nerve-roots; 4, line of origin of the dorsal roots; 5, ventral root filaments of spinal nerve; 6, dorsal root filaments; 6’, ganglion of the dorsal root; 7, 7’, the first two divisions of the nerve-trunk after its formation by the union of the two roots. The grooves are much exaggerated.” —Martin, 1917


H. Newell Martin, The Human Body (New York: Henry Holt and Company, 1917) 143


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