File:Kellicott 184.jpg

Fig. 184. Diagrams illustrating the development of the villi in the human placenta

A. B, After Peters; C. after Bryce.

A. Chorionic mesoderm just beginning to extend into the villi.

B. Mesoderm invading the villi which are now branched. Layer of Langhans cells forming beneath the syncytiotrophoderm.

C. Continued branching of the villi, all now covered only by the syncytiotrophoderm and the single layer of Langhans cells,

b, Decidua basalis; cb, capillaries of the decidua basalis; cv, capillaries of the villi; e, endothelium of the maternal capillaries; /, fibrin deposited at the junction of the trophoderm and decidua basilis; i, intervillous cavity filled with maternal blood; L, Langhans cells; m, chorionic mesoderm; s, syncytiotrophoderm; t, trophoderm; v, villi; vf, fixation villi.

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Kellicott WE. Outlines of Chordate Development (1913) Henry Holt and Co., New York.

Cite this page: Hill, M.A. (2024, April 27) Embryology Kellicott 184.jpg. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/File:Kellicott_184.jpg

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