File:Foster118a.jpg

Fig. 118. Histology of the placenta. Diagrammatic representations of the minute structure of the placenta

From Turner. See also 118b

I. Placenta in its most generalized form.

II. Structure of placenta of a Pig.

III. Of a Cow.

IV. Of a Fox.

Legend

F. the foetal ; M. the maternal placenta ; e. epithelium of chorion ; e'. epithelium of maternal placenta ; d. foetal bloodvessels ; d'. maternal blood-vessels ; v. villus.

Reference

Foster, M., Balfour, F. M., Sedgwick, A., & Heape, W. (1883). The Elements of Embryology. (2nd ed.). London: Macmillan and Co.

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