Heath's practical anatomy : a manual of dissections / [Christopher Heath].

  • Heath, Christopher, 1835-1905.
Date:
1893
Catalogue details

Licence: Public Domain Mark

Credit: Heath's practical anatomy : a manual of dissections / [Christopher Heath]. Source: Wellcome Collection.

    701/800 (page 679)
    Central lobe or Island of Keil, is concealed at the bottom of the fissure of Sylvius (p. 674). The Fissure of Sylvius, the commencement of which was seen on the basal surface, winds on to the calvarial surface, and running obliquely upwards and backwards, divides after a short course into two branches, the anterior or vertical, which ascends for a short Fig. 307. Calloso TnoTcimaT. distance into the inferior convolution of the frontal lobe, and the ^posterior or horizontal, which continues the direction of the main fissure backwards and upwards for about three inches, and then usually turns somewhat abruptly upwards for about an inch, termi- nating in the supra-marginal fissure of the parietal lobe. The point at which its course is changed is called the angle. The Fissure of Rolando or Central fissure commences above close to the longitudinal fissure, about half an inch behind the central point of this, and runs downwards and forwards in a sinuous course at an angle of about 65° with the longitudinal fissure, to end a little Fig. 307.—Lateral view of the convolutions of the brain (after Thane). The references to the Convolutions and the Sulci are distinguished by differ- ences in type. The convolution in the fore part of the occipital lobe behind the angular is now called the post-temporal.