The anatomy of the nervous system, from the standpoint of development and function . oral lobe, and is a very conspicuous fissure inmost mammalian brains (Fig. 83). Convolutions.—Dorsal to the corpus callosum is the gyrus cinguli betweenthe sulcus of the corpus callosum and the sulcus cinguli. The superior frontalgyrus is continued over the dorsal border of the hemisphere from the dorso-lateral surface and reaches the sulcus cinguli. Surrounding the end of thecentral sulcus is a quadrilateral convolution, known as the paracentral is bounded by the sulcus cinguli, its marginal ramus a
The anatomy of the nervous system, from the standpoint of development and function . oral lobe, and is a very conspicuous fissure inmost mammalian brains (Fig. 83). Convolutions.—Dorsal to the corpus callosum is the gyrus cinguli betweenthe sulcus of the corpus callosum and the sulcus cinguli. The superior frontalgyrus is continued over the dorsal border of the hemisphere from the dorso-lateral surface and reaches the sulcus cinguli. Surrounding the end of thecentral sulcus is a quadrilateral convolution, known as the paracentral is bounded by the sulcus cinguli, its marginal ramus and the paracentralsulcus. Another quadrilateral area, known as the precuneus, is bounded bythe parieto-occipital fissure, the subparietal sulcus, and the marginal ramus ofthe sulcus cinguli. The hippocampal gyrus lies between the hippocampal fissure Superior frontal gyrus Sulcus of corpus callosum .vGyrus cinguli :,Sulcus cinguli callosumGyrus fornicatusFrontal lobe Post, parolfactory sulcus-^-Parolfactory area- S. centralisParacentral sulcus Ant. parolfactory sulcus-. Paracentral lobule „ , • Parietal Marginal ramus__.— Precuneus Subparietal sulcus-- Parieto-occipital fissure — Cuneus-- Cakarine fissure - Lingual gyrus. Isthmus of gyrus Temporal lobe Rhinal fissure Uncm ! Hippocampal gyrus \ Inf. temporal gyrus fornicatus~- Hippocampal fissure Collateral fissurev> Fusiform gyrus Inferior temporal sulcus Fig. 171.—Diagram of the lobes, sulci, and gyri on the medial aspect of the human cerebral hemisphere. dorsally and the collateral and rhinal fissures ventrally. Its rostral extremitybends around the hippocampal fissure to form the uncus. It is connected withthe gyrus cinguli by a narrow convolution, the isthmus of the gyrus the name gyrus fornicatus it has been customary to include the gyru-cinguli. isthmus, hippocampal gyrus, and uncus. Between the collateral fissureand the inferior temporal sulcus is the fusiform gyrus which
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectnervoussystem, bookye
