. Quain's elements of anatomy . Fig. 741.—The Surface of the Fcetal Brain at Six Months. (From R. Wagner.) This figure is intended to show the commencement of the formation of the principalfissures and convolutions. A, from above ; B, from the left side. F, frontal lobe ; P,parietal; 0, occipital ; T, temporal; a, a, a, sHght appearance of the several frontalconvolutions; s, the Sylvian fissure ; s, its anterior division ; within it, C, the centrallobe or convolutions of the island ; r, fissure of Eolando ; p, the parieto-occipitalfissure. the whole substance of the wall of the hemisphere, whi
. Quain's elements of anatomy . Fig. 741.—The Surface of the Fcetal Brain at Six Months. (From R. Wagner.) This figure is intended to show the commencement of the formation of the principalfissures and convolutions. A, from above ; B, from the left side. F, frontal lobe ; P,parietal; 0, occipital ; T, temporal; a, a, a, sHght appearance of the several frontalconvolutions; s, the Sylvian fissure ; s, its anterior division ; within it, C, the centrallobe or convolutions of the island ; r, fissure of Eolando ; p, the parieto-occipitalfissure. the whole substance of the wall of the hemisphere, while the latter consist merelyof depressions and elevations of its more superficial poi-tion, it may be stated,with respect to their development, that the first of the primitive sulci to appear isthe fissure of Sylvius, which is visible before the end of the third month (Ecker)as a wide shallow depression or fossa between the anterior and middle lobe ofeach hemisphere. Of the remaining primitive sulci, the hippocampal or dentat
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Keywords: ., boo, bookcentury1800, booksubjectanatomy, booksubjecthumananatomy
