. The development of the chick; an introduction to embryology . -Mm prstr Fig. 73. — Entire embryo of 20 s, viewedas a transparent object from cranial flexure and the rotation ofthe head of the embryo have madeconsiderable o. m., Omphalo-mesenteric Fl., Cranial flexure. D. C, Duct ofCuvier. Dienc, Diencephalon. Mesenc,Mesencephalon. Metenc, Metencepha-lon. Myelenc. 1, and 2, Anterior andposterior divisions of the myelcncepha-lon. Telenc, Telencephalon. Vel. tr.,Velum transversum. Other abbrevia-tions as before, x 30. cent to and surrounding the embryo, and a ch
. The development of the chick; an introduction to embryology . -Mm prstr Fig. 73. — Entire embryo of 20 s, viewedas a transparent object from cranial flexure and the rotation ofthe head of the embryo have madeconsiderable o. m., Omphalo-mesenteric Fl., Cranial flexure. D. C, Duct ofCuvier. Dienc, Diencephalon. Mesenc,Mesencephalon. Metenc, Metencepha-lon. Myelenc. 1, and 2, Anterior andposterior divisions of the myelcncepha-lon. Telenc, Telencephalon. Vel. tr.,Velum transversum. Other abbrevia-tions as before, x 30. cent to and surrounding the embryo, and a choriogenous zone,comprising the remainder. The method of formation of amnion and chorion is as follows: FROM TWELVE TO THIRTY-SIX SOMITES 1 o- (a diagrammatic outline is first given and a detailed descrij^tionfollows). The somatopleure becomes elevated in the form ofa fold surrounding the embryo; this fold begins first in front ofthe head of the embryo as the head-fold of the amnion^ whicli ofi. Fig. 74. — Head of the same embryofrom the ventral side. Abbreviationsas before. ^/>^/77.
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Keywords: ., bookauthorlilliefrankrattray187, bookcentury1900, bookdecade1910
