File:Carnegie Year Book 37 fig01.jpg

Fig. 1. Drawings illustrating the enormous growth that occurs in the trophoblastic wall

Drawings illustrating the enormous growth that occurs in the trophoblastic wall (solid black) of the ovum in the four days following its parasitic attachment to the uterus. Tissue materials are necessary for such growth and these are supplied by the luxuriant uterine epithelium and the plasma and blood cells of the adjacent tissues. Previous to attachment there is very little actual increase in the mass of the ovum. These eight stages are all from monkey embryos shown at the same enlargement (X 75).

Their ages are as follows: A, 9 days; B, 9 days; C, 10 days; D, 10 days; E, 10% days; F, 11 days; G, 12 days; H, 13 days.

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Cite this page: Hill, M.A. (2024, June 2) Embryology Carnegie Year Book 37 fig01.jpg. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/File:Carnegie_Year_Book_37_fig01.jpg

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© Dr Mark Hill 2024, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G