And it is most remarkable that, as soon as all the principal sulci appear, the pattern according to which they are arranged is identical with that of the corresponding sulci of man.
The sulci appear later than the fissures and do not affect the internal cavity; they are due to the rapid growth of the cortex in certain areas.
The Gyri and Sulci on the Mesial Aspect of the Cerebral Hemisphere, r, Fissure of Rolando.
Professor Huxley says: "It is most remarkable that, as soon as all the principal sulci appear, the pattern according to which they are arranged is identical with the corresponding sulci in man.
And it is most remarkable that as soon as {147}all the principalsulci [or grooves] appear, the pattern according to which they are arranged is identical with that of the corresponding sulci of Man.
Rolando, and one of the frontal sulci plainly enough.
In no case, however, are either the frontal or the temporal sulci the earliest.
At the present moment there is not a shadow of evidence to shew that the sulci of a chimpanzee's, or orang's, brain do not appear in the same order as a man's.
These sulci are not, however, consequent upon the drying, because they are equally apparent and constant when the specimen has been immersed in fluid.
Lower margin of mouth notched in the middle; back of cell minutely sulcated; sulci short, interrupted, and irregular.
The pearly lustre (in the dry state) owing without doubt to the minute sulci on the backs of the cells.
As to the sculpturing of the brain surface by gyri and sulciwe still lack any good racial characters.
We have no definite and certain knowledge as to the significance of the gyri and sulci in the brain; but this does not invalidate the general proposition that relates them in some way with mental power.
Ecker, figure of the human embryo; on the development of the gyri and sulci of the brain; on the sexual differences in the pelvis in man; on the presence of a sagittal crest in Australians.
The two sulci centrales sive fissuræ Rolandi run straight to the border of the hemisphere, less deeply impressed than is normally the case, without forming an angle with each other.
Very strongly and deeply impressed sulci præcentrales seem to serve as substitutes for them.
Large and complicated convolutions of the brain with deep sulci have been regarded by some persons as inseparable from superior powers of mind.
They make no account of the fissures, the intervening sulci and anfractuosities that must cut many of these supposed cones, some at right and some at oblique angles.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "sulci" in a variety of sentences. We hope that you will now be able to make sentences using this word.
