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HUMAN PHYSIOLOGY 



FIG. 18. At the left is shown the shape of the spinal cord as seen 

 from behind. Two enlargements are noticeable; the upper is the re- 

 gion from which the arms are supplied, the lower stands in relation with 

 the legs. Two vertebrae are sketched near the middle of the cord to 

 show how it is enclosed by their arches. 



At the right is a cross-section of the cord with its dorsal side upmost 

 and the H of gray matter represented, (d.c.), (I.e.}, and (v.c.) are the 

 dorsal, lateral, and ventral columns of the white matter. 



