. A laboratory manual and text-book of embryology. Embryology. IOO THE STUDY OF SIX AND TEN MILLIMETER PIG EMBRYOS cervical sinus (see Fig. 88). The brain is differentiated into the five regions, telencephalon, dicnccphalon, â mesencephalon, metencephalon and myelencephalon. The spinal cord is cylindrical and gradually tapers off to the tail. The anlages of the cerebral and spinal ganglia and the main nerve trunks are shown. The oculomotor nerve begins to appear from the ventral wall of the mesencephalon. Ventrodateral to the metencephalon and myelencephalon occur in order the Sup. gang. n. p
. A laboratory manual and text-book of embryology. Embryology. IOO THE STUDY OF SIX AND TEN MILLIMETER PIG EMBRYOS cervical sinus (see Fig. 88). The brain is differentiated into the five regions, telencephalon, dicnccphalon, â mesencephalon, metencephalon and myelencephalon. The spinal cord is cylindrical and gradually tapers off to the tail. The anlages of the cerebral and spinal ganglia and the main nerve trunks are shown. The oculomotor nerve begins to appear from the ventral wall of the mesencephalon. Ventrodateral to the metencephalon and myelencephalon occur in order the Sup. gang. n. p Otocyst Acustic ganglion Jugular gang. u. 10 Gang, nodosum n. 10 N. accessorius Ca Gang. cert). N. hypoglossus Cervical sinus Atrium Ventral lobe liver Dorsal lobe liver Thoracic gang. I Mcsonephros Small intestine. Geniculate gang. n. 7 Semilunar gang. n. 5 Metencephalon Mesencephalon â N. oculomotorius Dicnccphalon Petrosal gang, n. Q Lens opening Olfactory pit Telencephalon Yolk-sac Allantois Ventricle Allantoic stalk Hind-gut Fig. 90.âDissection of a mm. pig embryo, showing the nervous system and viscera from the right side. X 18. semilunar ganglion and three branches of the trigeminal nerve, the geniculate ganglion and nerve trunk of the n. facialis, the ganglionic anlage of the n. acusticus and the otocyst. It will be observed that the nerve trunks are arranged with reference to the branchial arches and clefts. Caudal to the otocyst a continuous chain of cells extends lateral to the neural tube into the tail region. Cellular enlargements along this neural crest represent developing cerebral and spinal. 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 Prentiss, Charles William, 1874-1915. Philadelphia, London, W. B. Saunders
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectembryology, bookyear1
