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Gyri and sulci, on the outer surface of the cerebral hemisphere. Labels: f1, sulcus frontalis superior; f2, sulcus frontalis inferior; f.m., sulcus frontalis medius; p.m., sulcus paramedialis; A, pars basilaris; B, pars triangularis; C, pars orbitalis; S, Sylvian fissure; s1, anterior horizontal limb (Sylvian fissure); s2, posterior horizontal limb (Sylvian fissure); p.c.i., inferior praecentral sulcus; p.c.s., superior praecentral sulcus; r, fissure of Rolando; g.s., superior genu; g.i., inferior genu; d, sulcus diagonalis; t1, superior temporal sulcus (parallel); t2, inferior temporal sulcus; p1, inferior postcentral sulcus; p2. superior postcentral sulcus; p3, ramus horizontalis; p4, ramus occipitalis; s.o.t., sulcus occipitalis transversus; c.m., callosomarginal sulcus; c.t.r., inferior transverse furrow.

Gyri and Sulci on the Brain

Gyri and sulci, on the outer surface of the cerebral hemisphere. Labels: f1, sulcus frontalis superior;…

The gyri and sulci on the mesial aspect of the cerebral hemisphere. Labels: r, fissure of Rolando; r.o, rostral sulcus; i.t, incisura temporalis.

Gyri and Sulci on the Brain

The gyri and sulci on the mesial aspect of the cerebral hemisphere. Labels: r, fissure of Rolando; r.o,…

The gyri and sulci on the tentorial and orbital aspects of the cerebral hemispheres.

Gyri and Sulci on the Brain

The gyri and sulci on the tentorial and orbital aspects of the cerebral hemispheres.

Cerebral convolutions of the brain.

Cerebral Convolutions

Cerebral convolutions of the brain.

"Brain of chimpanzee. Ol, olfactory lobe; A, B, C, frontal, occipital, and temporal lobes; C1, a portion of temporal lobe; Sy, Sylvian fissure; In, insula or island of Reil; SOr, supra-orbital gyrus; SF, MF, IF, superior, middle, and inferior frontal gyri; R, fissure of Rolando; PPl, posteroparietal lobule; OPf, occipitotemporal sulcus; An, angular gyrus; 2, 3, 4, annectent gyri; AT, MT, PT, the anterior, middle, and posterior temporal gyri; SOc, MOc, IOc, the superior, middle, and inferior occipital gyri." -Whitney, 1911

Chimpanzee Brain

"Brain of chimpanzee. Ol, olfactory lobe; A, B, C, frontal, occipital, and temporal lobes; C1, a portion…

View of the appearance of the tortuous elevations (convolutions) of the brain, seen from above.

Convolutions of the Brain

View of the appearance of the tortuous elevations (convolutions) of the brain, seen from above.

Fissure of Rolando fully opened up, so as to exhibit the interlocking gyri and deep annectant gyrus within it.

Fissure of Rolando

Fissure of Rolando fully opened up, so as to exhibit the interlocking gyri and deep annectant gyrus…

"Brain of pig. Ol, olfactory lobe; A, B, C, frontal, occipital, and temporal lobes; C1, a portion of temporal lobe; Sy, Sylvian fissure; In, insula or island of Reil." -Whitney, 1911

Pig Brain

"Brain of pig. Ol, olfactory lobe; A, B, C, frontal, occipital, and temporal lobes; C1, a portion of…

"Brain of rabbit. Ol, olfactory lobe; A, B, C, frontal, occipital, and temporal lobes; Sy, Sylvian fissure." -Whitney, 1911

Rabbit Brain

"Brain of rabbit. Ol, olfactory lobe; A, B, C, frontal, occipital, and temporal lobes; Sy, Sylvian fissure."…