. Cunningham's Text-book of anatomy. Anatomy. 28 HUMAN EMBBYOLOGY. with each other round the medial border of the ccelom. The lateral border of the somatic mesoderm is continuous, at the margin of the embryonic area, with the mesoderm which covers the outer surface of the amnion, and the lateral border of the splanchnic layer is continuous with the mesoderm on the wall of the extra-embryonic or yolk-sac portion of the entodermal sac. The Paraxial Mesoderm.—Each paraxial mesodermal bar soon assumes the form Trophoblast cellular layer Plasmoclial trophoblast Neural tube Mesoderm of chorion Mesod
. Cunningham's Text-book of anatomy. Anatomy. 28 HUMAN EMBBYOLOGY. with each other round the medial border of the ccelom. The lateral border of the somatic mesoderm is continuous, at the margin of the embryonic area, with the mesoderm which covers the outer surface of the amnion, and the lateral border of the splanchnic layer is continuous with the mesoderm on the wall of the extra-embryonic or yolk-sac portion of the entodermal sac. The Paraxial Mesoderm.—Each paraxial mesodermal bar soon assumes the form Trophoblast cellular layer Plasmoclial trophoblast Neural tube Mesoderm of chorion Mesodermal somite Intermediate cell tract — ^_. Amnion cavity --r— Amnion ;.. Somatic mesoderm — Ccelom Splanchnic mesoderm -~" Primitive gut • Extra-embryonic ccelom Wall of yolk-sac * I Cavity of yolk-sac. Fig. 39.—Transverse Section of the Zygote shown in Fig. 38, showing the differentiation of the mesoderm. of a triangular prism with the apex directed ventro-medially, towards the notochord, and the base dorso-laterally, towards the surface ectoderm. The cephalic portion of each paraxial bar, as far caudalwards as the middle of the hind-brain, remains unsegmented, but the remainder is cut into a number of Scleratogenous mesoderm „ Muscle plate . Cutis lamella Wolffian duct -^ Intermediate cell 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
