. Cunningham's Text-book of anatomy. Anatomy. Fig. 550.—Two Drawings by His, illustrating the Development of the Human Brain. A, Median section through a foetal human brain in the third month of development. B, Schema showing the directions in which the cerebral hemisphere expands during its growth. Pars mamillaris hypothalami. M. Mamillary region. O. Occipital lobe Pars optica hypothalami. F. Frontal lobe. T. Temporal lobe. P. Parietal lobe. area of the neural tube to which it becomes attached is destined to become part of the cerebral hemisphere. At the end of the first month t
. Cunningham's Text-book of anatomy. Anatomy. Fig. 550.—Two Drawings by His, illustrating the Development of the Human Brain. A, Median section through a foetal human brain in the third month of development. B, Schema showing the directions in which the cerebral hemisphere expands during its growth. Pars mamillaris hypothalami. M. Mamillary region. O. Occipital lobe Pars optica hypothalami. F. Frontal lobe. T. Temporal lobe. P. Parietal lobe. area of the neural tube to which it becomes attached is destined to become part of the cerebral hemisphere. At the end of the first month this portion of the hemi- sphere becomes drawn out as a hollow protrusion, the distal end of which is coated with a layer of olfactory ganglion and is known as the bulbus olfactorius; the rest forms a peduncle. In the course of its subsequent development in the human brain (though not in those of most mammals) the cavity in the bulb and peduncle becomes completely obliterated. The peduncle becomes so <*reatly elongated and attenuated that, to the unaided eye, it appears to be wholly formed. 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 Cunningham, D. J. (Daniel John), 1850-1909; Robinson, Arthur, b. 1862, ed. New York, W. Wood
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectanatomy, bookyear1914
