. Anatomy, descriptive and applied. Anatomy. Inferior medullary velum Choroid plexus Cisterna basalis of subarachnoid apace Central canal Fig- 635.—Scheme of roof of fourth ventricli DECUSSATION. Fig. 636.—Schema of the pyramidal decussation Cisterna pontis of suharach^wid space the foramen of Majendie. sought nearest the middle line, the mixed gray just ectad, while the sensor is the outermost of all. Instead of the ventral, lateral, and dorsal horns of each half of the spinal cord, we have an ental, middle, and ectal comu in each half of the medulla oblongata. The positions alone have change
. Anatomy, descriptive and applied. Anatomy. Inferior medullary velum Choroid plexus Cisterna basalis of subarachnoid apace Central canal Fig- 635.—Scheme of roof of fourth ventricli DECUSSATION. Fig. 636.—Schema of the pyramidal decussation Cisterna pontis of suharach^wid space the foramen of Majendie. sought nearest the middle line, the mixed gray just ectad, while the sensor is the outermost of all. Instead of the ventral, lateral, and dorsal horns of each half of the spinal cord, we have an ental, middle, and ectal comu in each half of the medulla oblongata. The positions alone have changed; the functional relations to nerve roots having corresponding func- tions are homologous. Thus, the motor hypoglossal nucleus is placed in the mesal part of the ventricular floor, while the termi- nal nuclei of the aflferent vagus, glossopharyngeal, and auditory nerves lie in the lateral part. Another cardinal change in the internal structure of the mpdulla oblongata, accompanying the pre- ponderating development of the cerebrum and great basal gan- glia, is caused by interrupting and decussating fibre systems which seek passage through the brain stem and encroach more or less on its primitive architecture. While in the spinal cord there is a perfect continuity of the central tubular grav, we find in the medulla oblongata more pronounced peninsular and isolated insular nuclei or ganglionic gray Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Gray, Henry, 1825-1861; Spitzka, Edward Anthony, 1876-1922. Philadelphia, New York, Lea & Febiger
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectanatomy, bookyear1913
