1450 



A MANUAL OF ANATOMY 



lobule and the corpus callosum, the branch to the latter being known 

 as the artery of the corpus callosum. 



Anterior Communicating Artery. — This vessel connects the two 

 anterior cerebral arteries at the entrance to the great longitudinal 

 fissure, and lies over the lamina terminalis, in front of the optic 

 commissure. It gives off a few twigs, which accompany the antero- 

 mesial branches of each anterior cerebral artery. 



Middle Cerebral Artery. — ^This is the larger of the two terminal 

 branches of the internal carotid artery, and it has a wider distribu- 

 tion than the anterior cerebral artery. It enters the stem of the 

 fissure of Sylvius, in which it passes outwards. 



Branches. — These are arranged in two groups, antero-lateral or 



Fig. 606. — Distribution of the Left Middle Cerebral Artery (Charcot). 



F.I. Superior Frontal Gyrus 

 F.2. Middle Frontal Gyrus 

 F.3. Inferior Frontal Gyrus 



F.A. Ascending Frontal Gyrus 



P. A. Ascending Parietal Gyrus 

 L.P.S. Superior Parietal Gyru 

 L.P.I. Inferior Parietal Gyrus 



P.C. Angular Gyrus 



L.O. Occipital Lobe 



L.T. Temporal Lobe 



S. Middle Cerebral Artery entering 



Fissure of Sylvius 

 P. Lenticulo-striate Arteries 



1. Artery to Broca's Gyrus (Inferior 



Frontal Gyrus) 



2. Ascending Frontal Artery 



3. Ascending Parietal Artery 



4. Parieto-Temporal Artery 



5. Arteries to Temporal Lobe 



ganglionic and cortical. The antero-lateral or ganglionic branches 

 pass through the locus perforatus anticus, and form two sets, 

 internaJ striate and external striate. The internal striate arteries 

 represent the lenticular arteries of Duret, and they supply the globus 

 pallidus (inner part) of the lenticular nucleus, the internal capsule, 

 and the caudate nucleus. The external striate art jries represent 

 the lenticulo-striate and lenticulo-optic arteries of Duret. The 

 lenticulo-striate arteries supply the putamen (outer part) of the 

 lenticular nucleus and the external capsule. One of the lenticulo- 

 striate arteries is larger than the others, and is subject to rupture 

 in cases of cerebral haemorrhage. It is known as the artery of cere- 



