. A laboratory manual and text-book of embryology. Embryology. LATERAL DISSECTION OF THE VISCERA 99 The cervical flexure is more marked, the olfactory pits larger and deeper. The liver is more prominent, the mesonephros and segments less so than in the 6 mm. pig. Lateral Dissection of the Viscera To understand the sectional anatomy of an embryo, a study of dissections and reconstructions is essential. For methods of dissection see p. 146, Chapter Spinal cord Cervical seg. Myelenccphaloa ^% -^telencephalon yf—Mesencephalon —Diencephalon Yolk-sac and umbilical cord Thoraci-c seg- ment 12 Lumbar
. A laboratory manual and text-book of embryology. Embryology. LATERAL DISSECTION OF THE VISCERA 99 The cervical flexure is more marked, the olfactory pits larger and deeper. The liver is more prominent, the mesonephros and segments less so than in the 6 mm. pig. Lateral Dissection of the Viscera To understand the sectional anatomy of an embryo, a study of dissections and reconstructions is essential. For methods of dissection see p. 146, Chapter Spinal cord Cervical seg. Myelenccphaloa ^% -^telencephalon yf—Mesencephalon —Diencephalon Yolk-sac and umbilical cord Thoraci-c seg- ment 12 Lumbar segment 5 FIG gn.—A human embryo 7 mm. long, viewed from the right side (Mall in Kallmann's Hand- atlas). I, II, III, branchial arches 1, 2 and 3; H, III, heart; L, liver; V, otic vesicle; R, olfactory placode; Tr, semi-lunar ganglion of trigeminal nerve. VI. Before studying sections, the student should become as well acquainted as possible with the anatomy of the embryo and compare each section with the figures of reconstructions and dissections. Nervous System.—Fig. 90 shows the central nervous system and viscera exposed on the right side of a mm. embryo. The ventrolateral wall of the head has been left intact with the lens cavity, olfactory pit, and portions of the maxillary and mandibular processes, second and third branchial arches and. 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
