. A text-book of comparative physiology for students and practitioners of comparative (veterinary) medicine . Fig. 118. Fig. 117. ?!•—Development of the heart in the human embryo, from the fourth to thesixth week. A. hmbryo of four weeks (KOlliker, after Coste). B, anterior Cposterior 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 endsof second and third branchial arches; d, buds of upper limbs; e liver- f intes-tine; 1, superior vena cava: 1, left superior vena cava; 1, opening of inferiorbu?b C
. A text-book of comparative physiology for students and practitioners of comparative (veterinary) medicine . Fig. 118. Fig. 117. ?!•—Development of the heart in the human embryo, from the fourth to thesixth week. A. hmbryo of four weeks (KOlliker, after Coste). B, anterior Cposterior 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 endsof second and third branchial arches; d, buds of upper limbs; e liver- f intes-tine; 1, superior vena cava: 1, left superior vena cava; 1, opening of inferiorbu?b CaVa aM eft anricles; 3- 3- ri§ht and left ventricles; 4, aortic Fig. 118.—Human embryo of about three weeks (Allen Thomson), uv. yelk-sac- alallantois; am, amnion; ae, anterior extremity; pe. posterior extremity. idly reaches the dorsal side, when the double ventricle thusformed communicate by a right and a left auriculo-ventricularopening with the large and as yet undivided auricle. Later anincomplete septum forms similar divisions in the auricle ; theaperture {foramen ovale) left by the imperfec
Size: 1688px × 1479px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, bookpublishernewyo, bookyear1890
