A text-book of physiology, for medical students and physicians . the basal processes of the cells, the olfac-tory fibers, through the cribriform plate of the ethmoid bone intothe olfactory bulb. The Olfactory Bulb and its Connections.—The olfactorybulbs are outgrowths from and portions of the cerebral hemi-spheres. Each bulb is connected with the cerebral hemispheresby its olfactory tract. The connections established by the fibers* See Barker, The Nervous System, 1899, for references to literature. 214 PHYSIOLOGY OF CENTRAL NERVOUS SYSTEM. of this tract are widespread, complicated, and in part
A text-book of physiology, for medical students and physicians . the basal processes of the cells, the olfac-tory fibers, through the cribriform plate of the ethmoid bone intothe olfactory bulb. The Olfactory Bulb and its Connections.—The olfactorybulbs are outgrowths from and portions of the cerebral hemi-spheres. Each bulb is connected with the cerebral hemispheresby its olfactory tract. The connections established by the fibers* See Barker, The Nervous System, 1899, for references to literature. 214 PHYSIOLOGY OF CENTRAL NERVOUS SYSTEM. of this tract are widespread, complicated, and in part incom-pletely known. All those portions of the brain connected with t hesense of smell are sometimes grouped together as the rhinenceph-alon. According to von Kolliker, the parts included under thisdesignation are, in addition to the olfactory bulb and tract, Am-nions horn, the fascia dentata, the hippocampal lobe, the fornix, theseptum pellucidum, and the anterior commissure. The schematicconnections of the olfactory fibers are as follows (Fig. 95): After. ? -Diagram of the central course of the olfactory fibers: /, Olfactory bulb;//, olf < , III, cortex of the hippocampal lobe (gyrus uncinatus): /V, anterioi Commit lire, olfactory portion; A, olfactory epithelial cells of nose (their fibers, olfactorynerve libers, terminate in the glomeruli of the bulb)] It, glomeruli 01 olfactory bulb wherethe olfactory fibers come in contact with the dendrites ot the mitral cells; c, mitral andbru-h cells; I, -, 3, axons from the mitral cells constituting the fibers of the olfactorytract. Fibei •!, which enter the commissure, arise, according to somo observers, fromcells in the olfactory near the base of the tract. entering the olfactory lobe the libers terminate in certain globularbodies, the glomeruli olfactorii (B),whose diameter varies from to Here connections are made by contact with the dendritesof nerve cells of the olfactory lobe, the mitral and brush cells
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