. Comparative anatomy. Anatomy, Comparative. THE ENDOCRINAL ORGANS 463 properties, these cells vary from cells with strong affinity for dyes to those with weak affinity. Some are acidophilic, some basophilic. The acidophilic cells are conspicuous in cases of gigantism, while sex derange- ment is associated \^'ith changes in the basophilic. In the pars intermedia some colloid-filled folHcles resembling those of the thyroid occur among the cell cords. The cells of the posterior lobe are chiefly neuroglia cells with numerous connective tissue fibers. (Fig. 384, F) Physiology. One of the important
. Comparative anatomy. Anatomy, Comparative. THE ENDOCRINAL ORGANS 463 properties, these cells vary from cells with strong affinity for dyes to those with weak affinity. Some are acidophilic, some basophilic. The acidophilic cells are conspicuous in cases of gigantism, while sex derange- ment is associated \^'ith changes in the basophilic. In the pars intermedia some colloid-filled folHcles resembling those of the thyroid occur among the cell cords. The cells of the posterior lobe are chiefly neuroglia cells with numerous connective tissue fibers. (Fig. 384, F) Physiology. One of the important functions of the anterior lobe is the stimulation of growth. Enlarged pituitary in early life is accom- MASSA INTERMEDIA SULCUS ClMGJ_ GYRUS CINGULl SUPERIOR FRONfTAL GYRUS HALAMUS •CENTRAL SULCUS CHORIOIDEA C3 RD VENT.) CORPUS CAU-OSUM POSTERIOR COMMISSURE PINEAL BOW SUBPARIETAL SULCUS. FORN FRONTAL POLE ' ANTERIOR COMMISSURE' TEJ»/(INAL LMMI-^ OPTIC NERVE—' OPTIC CHIASMA" IhfUNDIBULUM • hypophysis' mammillary boo oculomotor nzr/e PONS' FOURTH VENTRICLE' MEDULLA' CENTRAL CANAL' LAMINA QUADRIGEMINA OCCIPITAL LOBE CAlCARINA FISSURE UNGUAL GYRUS OCCIPITAL POLE 'CEREBELLUM CHORIOIDEA C4TH VENT.) -SPINAL CORD Fig. 383.—The human brain in median section and aspect. The pituitary gland (hypophysis) is attached to the infundibulum of the brain and embedded in the sella turcica of the sphenoid bone. (Redrawn after Sobotta.) panied by excessive bone growth. Deficient secretion, on the other hand, produces a certain t>'pe of dwarf, the ateliotic dwarf or "; Administration of anterior lobe extract has in some instances increased the height of such dwarfs. After the growth of the long bones has ceased, as in the normal adult, it is of course impossible to stimulate further growth in height. But when, as the result of tumorous enlargement, anterior lobe secretion is increased, a local growth of bone, sometimes asymmetrical, may occur. Such cases of
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