A text-book of animal physiology : with introductory chapters on general biology and a full treatment of reproduction, for students of human and comparative (veterinary) medicine and of general biology / by Wesley Mills ... with over 500 illustrations.
- T. Wesley Mills
- Date:
- 1889
Licence: Public Domain Mark
Credit: A text-book of animal physiology : with introductory chapters on general biology and a full treatment of reproduction, for students of human and comparative (veterinary) medicine and of general biology / by Wesley Mills ... with over 500 illustrations. Source: Wellcome Collection.
Provider: This material has been provided by the Augustus C. Long Health Sciences Library at Columbia University and Columbia University Libraries/Information Services, through the Medical Heritage Library. The original may be consulted at the the Augustus C. Long Health Sciences Library at Columbia University and Columbia University.
117/750 page 85
![a maternal part, the decidua serotina, the two becoming blended so that the removal of one involves that of more or less of the others. The connection of parts is far closer than that described for the rabbit; and, even with the preparation that Nature makes for the final separation of the placenta from both foetus and Fig. 94.—Diagram illustrating the decidua, placenta, etc. (after Lifgeois), e, embryo ; J. intestine ; p. pedicle of the umbilical vesicle : !(. v. umbilical vesicle ; a. amnion ; cli, chorion; i'. t, vascular tufts of the chorion, constituting the fcetal portion of the placenta; m. p, maternal portion of the placenta ; d. i\ decidua vera ; d. r. decidua renexa ; al, allantois. mother, this event does not take place without some rupture of vessels and consequent haemorrhage. It is difficult to conceive of the great A^ascularity of the human placenta without an actual examination of this structure itself, which can be done after being cast off to great advan- tage when floating in water; by which simple method also the thinness and otlior cliuracteristics of tlic membranes can be well made out. The great vessels conveying the fcjetal ])lood to and from the placenta are reduced to three, two arteries and one vein. The villi of the placenta (chorion) an; usually .said to liang freely](https://iiif.wellcomecollection.org/image/b21212867_0117.jp2/full/800%2C/0/default.jpg)
