. A text-book of comparative physiology for students and practitioners of comparative (veterinary) medicine. Physiology, Comparative. Fio. 118. Fis. 117. Fia. 117.—Development of the heart in the hnman embryo, from the fourth to the sixth week. A. Embryo of four weeks (KOlliker, after Coste). B, anterior, C, posterior views of the heart of an embryo of six weeks (KOlliker, after Ecker). a. upper limit of buccal cavity; c, buccal cavity; b, lies between the ventral ends of second and third branchial arches; d, buds of upper limbs; e, liver; /, intes- tine; 1, superior vena cava; 1', left superi
. A text-book of comparative physiology for students and practitioners of comparative (veterinary) medicine. Physiology, Comparative. Fio. 118. Fis. 117. Fia. 117.—Development of the heart in the hnman embryo, from the fourth to the sixth week. A. Embryo of four weeks (KOlliker, after Coste). B, anterior, C, posterior views of the heart of an embryo of six weeks (KOlliker, after Ecker). a. upper limit of buccal cavity; c, buccal cavity; b, lies between the ventral ends of second and third branchial arches; d, buds of upper limbs; e, liver; /, intes- tine; 1, superior vena cava; 1', left superior vena cava; 1", opening of inferior vena cava; 2, 8', right and left auricles; 3, 3', right and left ventricles; 4, aortic bulb. FiQ. 118.—Human embryo of about tliree weeks (Allen Thomson), uv, yelk-sac; al, allantois; am, amnion; ae, anterior extremity; pe, posterior extremity. idly reaches the side, when the double ventricle thus formed communicate by a right and a left auriculo-ventricular opening with the large and as yet undivided auricle. Later an incomplete septum forms similar divisions in the auricle ; the aperture (foramen ovale) left by the imperfect growth of this wall persisting throughout fcetal life. The Eustachian valve arises on the dorsal wall of the right auricle, between the vena cava inferior and the right and left. 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 Mills, Wesley, 1847-1915. New York, Appleton
Size: 1679px × 1488px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthormillswes, bookcentury1800, bookdecade1890, bookyear1890
