File:Kellicott 184.jpg

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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.

   Outlines of Chordate Development 1913: 1. Amphioxus | 2. Early Frog | 3. Later Frog Organogeny | 4. Early Chick - Embryonic Membranes and Appendages | 5. Later Chick - Organogeny | 6. Early Mammal - Embryonic Membranes and Appendages | Figures

Cite this page: Hill, M.A. (2024, April 15) Embryology Kellicott 184.jpg. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/File:Kellicott_184.jpg

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current07:15, 28 August 2013Thumbnail for version as of 07:15, 28 August 2013661 × 1,000 (196 KB)Z8600021 (talk | contribs)==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 L...

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