lyby the union of the vitelline veins and terminating anteriorly in the twoventral aortae. Such a heart from a rabbit embryo is shown in Fig. 159,A. It soon becomes bent hke a U, the venous opening being carriedforward dorsal to the aortic part as shown in B and C. The ventral oraortic hnib of the… … D E F ¥ IC, 759.— KmBRVCjNIC HlvARTS. A aiul B, From rabbits o da\s after coitus ; C. from a human enibr\o of 3 (?) weeks ; D aixf E, fronj a 12mm. pic;- fD sectioned on tlie left of tlie median sei)tum. and E on the ri^ht of it) ; F, froin a 13 6 nun.liunian embryo, sectioned like E. The hearts…
Histology · Microscopy
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