-8o 



MAN 



fissure. It |)assc's biu'kward and sli^htl\ ii|j\\ar(l tor a distance ol approx- 

 imately 8 eni. This part ol the hssiire lorins the- hoiiiichiry between the Irontal 

 and parietal lobes aboM' and the temporal lobt' below. It usually ends by 



MG. 53~A. UOKSAL SL RF.ACE OV BKAIN, HOMO SAPIENS. 



lActiKil Lcnslli I ifi inni.l 



di\iding into two short arms, one ol w huh enters tlu' parietal lobe and the 

 other extends downward into the ti'mj^oral lobe. The three divisions ot the 

 Sylvian lissure upon the lateral surl'aee of the hemis|:)here demarcate certain 

 portions of the inferior frontal, [parietal and superior temporal convolutions. 

 The portion of the inferior frontal convolution lying below the anterior hori- 



