Fetus of a cow, with its membrane. Labels: a, placenta; b, chorion with the allantois adherent to its inner surface; c, amnion seen through outer covering; d, fetus seen through its covering.
GalleriesMammal Anatomy: Internal Organs
Vaughn, I. Strangeway's Veterinary Anatomy (Toronto, CAN: J. A. Carveth & Co., Ltd., 1904)