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Plate 4

Fig. 5.

Right ventrolateral view of heart, myoepicardial mantle, and pericardial cavity. X 100.

Fig. 6.

Ventral wall, toward exocecelom, has been removed (cf. fig. 3). Ventral view of same model, slightly from the left side.

Fig. 7.

The vein in the splanchnopleure on the right side is the yolk-sac portion of the omphalomesenteric vein, as yet unconnected with the heart.

Fig. 8.

Right ventrolateral view of cardiac plexus. X 200. Same model in ventral view.

For position of heart plexus within the body, see figures 3 and 4.

Embryo at Segmentation: Figure A | Plate 1 | Plate 2 | Plate 3 | Plate 4 | Plate 5 | Carnegie stage 9 | Carnegie Embryo 1878


Ingalls NW. A human embryo at the beginning of segmentation, with special reference to the vascular system. (1920) Contrib. Embryol., Carnegie Inst. Wash. Publ. 274, 11: 61-90.

Cite this page: Hill, M.A. (2024, February 29) Embryology Ingalls1920plate04.jpg. Retrieved from

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