File:Nervous and mental diseases (1919) (14781279342).jpg

Identifier: nervousmentaldis00chu (find matches)
Title: Nervous and mental diseases
Year: 1919 (1910s)
Authors: Church, Archibald, b. 1861 Peterson, Frederick, 1859-1938, joint author
Subjects: Nervous system Mental illness
Publisher: Philadelphia, London, W.B. Saunders company
Contributing Library: The Library of Congress
Digitizing Sponsor: The Library of Congress

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Fig. 122.—Cross-section of cervical spinal cord, showing its anatomical subdivisions (Schaefer). The arterial supply of the cord consists of two systems, anterior andposterior. The anterior spinal artery, arising within the skull by tworoots from the vertebrals, extends the entire length of the cord at theanterior fissure (Fig. 127). It is reinforced by branches from the inter-costal, lumbar, and sacral arteries, which follow the corresponding nervesinto the spinal canal and accompany the nerve-roots to the cord. Theanterior spinal artery gives off about three hundred branches, calledanterior median arteries, which penetrate the anterior fissure at a rightangle to the parent stem. At the commissure they enter the cord andwithout dividing turn toward the right or left anterior horn. At theneck of the horn the artery divides into an anterior branch to theanterior horn and a posterior branch which is distributed to the neckand to a portion of the posterior horn. A branch is also given

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