. Quain's elements of anatomy . XII, the hypoglossal nerve ; p a, pyramid ;o, olive ; a r, arciform fibres ; r, restiform body ; tr, tubercle of Rolando ; c a, anterior,c p, posterior, and c I, lateral columns of the spinal cord ; 01,Ci, anterior and posteriorroots of the first cervical nerve. 286 THE MEDULLA OBLONGATA. Tyj. 2G2. Fig. 262.—Section across the medulla OBLONaATA A LITTLE BELOW THE POINT OF THE CALAMUS scRiPTORius (LocMiarbClarke). c, central canal; /, anterior medianfisssure ; , funiculus gracilis; /. c., funicu-lus cuneatus; , tubercle of Rolando ; &,olivary body; , py
. Quain's elements of anatomy . XII, the hypoglossal nerve ; p a, pyramid ;o, olive ; a r, arciform fibres ; r, restiform body ; tr, tubercle of Rolando ; c a, anterior,c p, posterior, and c I, lateral columns of the spinal cord ; 01,Ci, anterior and posteriorroots of the first cervical nerve. 286 THE MEDULLA OBLONGATA. Tyj. 2G2. Fig. 262.—Section across the medulla OBLONaATA A LITTLE BELOW THE POINT OF THE CALAMUS scRiPTORius (LocMiarbClarke). c, central canal; /, anterior medianfisssure ; , funiculus gracilis; /. c., funicu-lus cuneatus; , tubercle of Rolando ; &,olivary body; , pyramid ; XI, XII, spinalaccessory and hypoglossal nerves ; XI, XIF,their nuclei. Posterior columns. It will beremembered that in the upper regionof the spinal cord a small portion ofthe whole posterior column is markedoflp from the rest by a well-developedpia-matral septum, and is indicatedin the surface by a distinct longitudinal prominence bounded laterallyby a shallow groove. The portion thus marked off is the posterior. sjivy
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