A manual of anatomy . ortical localization offunctions. 1. The motor area occupies the posterior portion of the lateralsurface of the frontal lobe just in front of the central fissure; it ex-tends over upon the medial surface as indicated. 2. The general sensor area {tactile, temperature and pain) lies infrontal portion of the lateral surface of the parietal lobe just behind 392 THE NERVE SYSTEM the central fissure. It has a marked extension upon the medialsurface also. 3. The auditory area is located in the upper part of the lateralsurface of the temporal lobe just be ow the sylvian fissure.
A manual of anatomy . ortical localization offunctions. 1. The motor area occupies the posterior portion of the lateralsurface of the frontal lobe just in front of the central fissure; it ex-tends over upon the medial surface as indicated. 2. The general sensor area {tactile, temperature and pain) lies infrontal portion of the lateral surface of the parietal lobe just behind 392 THE NERVE SYSTEM the central fissure. It has a marked extension upon the medialsurface also. 3. The auditory area is located in the upper part of the lateralsurface of the temporal lobe just be ow the sylvian fissure. 4. The visual area is located in the occipital lobe partially uponthe lateral surface but mainly upon the medial surface, occupyingthe entire lobe {cuneiis) here. 5. The olfactory area is upon the medial surface surrounding thecallosum, including the fornix, fimbria and hippocampal portion ofthe temporal lobe. 6. The gustatory area is located upon the medial surface of thetemporal lobe just beneath the olfactory Pig. 281.—Medial surface of the right cerebral hemisphere showing cortical localization of functions. TOPOGRAPHY OF THE BRAIN 1. The longitudinal fissure is indicated by drawing a line from theexternal occipital protuberance (inion) to the root of the nose(glabella). 2. The Central Fissure.—Start at a point upon the longitudinalfissure line i cm. behind its midpoint; from this point draw a linedownward and forward for 9 to 10 cm. at an angle of 70° to 71°. 3. The lateral {sylvian) fissure starts i}i inches (3 cm.) behindthe external angular process of the frontal bone and extends upwardand backward to a point % inch (2 cm.) below the most prominentpart of the parietal eminence. 4. Transverse Fissure.—Draw a line from the inion to the externalauditory meatus. Kronleins Method.—(i) The base line is a horizontal line from INTERNAL ANATOMY OF THE BRAIN 393 the lower border of the orbit to the upper border of the externalauditory meatus. (2) Draw a horizonta
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Keywords: ., bookcentury1900, bookdecade1910, booksubjecthumananatomy, bookyea
