Licence: Public Domain Mark
Credit: Architecture of the brain / by Wm. Fuller. Source: Wellcome Collection.
Provider: This material has been provided by the Augustus C. Long Health Sciences Library at Columbia University and Columbia University Libraries/Information Services, through the Medical Heritage Library. The original may be consulted at the the Augustus C. Long Health Sciences Library at Columbia University and Columbia University.
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![!tion repre- ed by higs. 26 ARCHITECTURE OF THE BRAIN. understood. The removal of the cerebellum, as seen in Fig. 8, is advantageous to this dissection, as the parts above men- tioned are then seen in connection with those below. In general, this dissection presents a median longitudinal ^'' depression, and two lateral masses, one on eacli side. In the middle line, between the lateral masses, is a longitudinal cleft, the third ventricle. The third ventricle is one and half an incli in length, extends vertically to the base of the brain, Floor of third ven- ^^]lere its floor is formed by the parts contained in the inter- tricle. Fig. 7-9. •' ■>■ peduncular space, including the lamina cinerea, optic commis- sure and tuber cinereum. Communicating with the ventricle below is a canal leading to the pituitary body, the infundi- bulum. The pillars of the fornix descend in the anterior extremity of the third ventricle. By separating the anterior Anterior commis- jiillars of the forulx the middle portion of the anterior com- snre. Figs. 6-13- 14-21-23 23-14*- mlssurc is exposed, and is seen crossing the anterior wall of the ventricle in front of them. The anterior commissure of the third ventricle is directed outward and backward on each side to the extremity of the inferior ramus of the internal capsule of the hemisphere, its extremities terminating in the temporal lobes. It is supposed to be the commissure of the centres of smell and taste. The internal surfaces of the thalami form the lateral walls of the third ventricle. Crossing its middle, uniting the central part of one thalamus wilh that of the other, is a broad gray commissure, the mid- dle or gray commissure of the third ventricle. The ventricle is pointed behind, and is continuous with a canal which passes backwards be^ieath another transverse band of white fibres, the posterior commissure of the third ventricle. The canal just mentioned leads downwards and backwards, beneath the posterior commissure and the commissure of the corpora quadrigemiua and valve of Vieussens, to communicate with Third ventricle](https://iiif.wellcomecollection.org/image/b21221649_0034.jp2/full/800%2C/0/default.jpg)
