The encyclopdia britannica; a dictionary of arts, sciences, literature and general information . ely backward andupward from the Sylvian to the longitudinalfissure. Springing from the front of thisgyrus, and passing forward to the anteriorend of the cerebrum, are three gyri, arrangedin parallel tiers from above downwards, andnamed superior, middle and inferior frontalgyri, which are also prolonged on to theorbital face of the frontal lobe. The ParietalLobe is also complex; its most anteriorgyrus, named ascending parietal or post-central, ascends parallelto and immediately behind the fissure of
The encyclopdia britannica; a dictionary of arts, sciences, literature and general information . ely backward andupward from the Sylvian to the longitudinalfissure. Springing from the front of thisgyrus, and passing forward to the anteriorend of the cerebrum, are three gyri, arrangedin parallel tiers from above downwards, andnamed superior, middle and inferior frontalgyri, which are also prolonged on to theorbital face of the frontal lobe. The ParietalLobe is also complex; its most anteriorgyrus, named ascending parietal or post-central, ascends parallelto and immediately behind the fissure of Rolando. Springing fromthe upper end of the back of this gyrus is the supra-parietal lobule,which, forming the boundary of the longitudinal fissure, extends asfar back as the parieto-occipital fissure; springing from the lowerend of the back of this gyrus is the supra-marginal, which forms the body Sylvian grey matter Sylvian aqueduct Tegmentum Nucleus of third nerve Posterior longitudinalbundle Red nucleus Fibres of superiorcerebellar peduncle Third nerve Substantia nigra Corpus mammillare. ?OLE From Cunningham, Text-book oj Anatomy. Fig. 9.—Gyri and Sulci, on the outer surface of the Cerebral Hemisphere. , Superior praecentral sulcus. r, Fissure of Rolando. , Superior genu. Inferior genu. a. Sulcus diagonalis. f^, Superior temporal sulcus (parallel P, Inferior temporal sulcus. [sulcus). p^. Inferior postcentral sulcus. p^, Superior postcentral sulcus. p. Ramus horizontalis. p*. Ramus occipitalis. Sulcus occipitalis transversus. occ. lat, Sulcus occipitalis lateralis (the sulcus lunatus of Elliot Smith),cm, Calloso-marginal Inferior transverse furrow. Pars orbitalis. Sylvian fissure. [fissure). Anterior horizontal limb (Sylvians^. Ascending limb (Sylvian fissure).s^. Posterior horizontal limb (Sylvian fissure)., Ascending terminal part of the pos-terior horizontal limb of the , Infer
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectencyclo, bookyear1910
