The development of the human body; a manual of human embryology . Fig. 127.—Heart of Embryoop mm., from a recon-struction. a, Auricle; ab, aortic bulb; d,diaphragm; dc, ductus Cuvieri;I, liver; v, ventricle; vj, jugu-lar vein; vu, umbilical vein.—{His.). Fig. 128.—Heart of Embryo of mm. seen from the Dorsal , Ductus Cuvieri; I A, left auricle; rA, right auricle; vj, jugular vein; VI, left ventricle; vu, umbilical vein.—(His.) lies dorsally and to the left is destined to give rise to bothauricles, the portion which passes from right to left repre-sents the future left ventric
The development of the human body; a manual of human embryology . Fig. 127.—Heart of Embryoop mm., from a recon-struction. a, Auricle; ab, aortic bulb; d,diaphragm; dc, ductus Cuvieri;I, liver; v, ventricle; vj, jugu-lar vein; vu, umbilical vein.—{His.). Fig. 128.—Heart of Embryo of mm. seen from the Dorsal , Ductus Cuvieri; I A, left auricle; rA, right auricle; vj, jugular vein; VI, left ventricle; vu, umbilical vein.—(His.) lies dorsally and to the left is destined to give rise to bothauricles, the portion which passes from right to left repre-sents the future left ventricle, while the succeeding portionrepresents the right ventricle. In later stages (Fig. 128)the left ventricular portion drops downward in front ofthe auricular portion, assuming a more horizontal posi-tion, while the portion which represents the right ven- THE HEART. 251 tricle is drawn forward so as to lie in the same plane asthe left. At the same time two small out-pouchings develop fromthe auricular part of the heart and form the first indica-tions of the two auricles. As development progresses,these increase in size to form large pouches opening into acommon auricular canal (Fig. 129) which is directly con-tinuous with the left ventricle, and a
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectembryol, bookyear1902
