Epistemis

Fetal membranes (amnion)

Embryology · Annexes and placenta

Fig. 84. — Diagrams illustrating the development of the amnion and allantois. The upper Figure (.4), a cross section of an earlier stage, shows the amniotic folds rising above the embryo. The lower Figure (B), a longitudinal section of a later stage, shows the allantois as well as the completely closed amnion. In most mammals the fused allantois and serosa (chorion) form the fetal placenta. Ectod
Fig. 84. — Diagrams illustrating the development of the amnion and allantois. The upper Figure (.4), a cross section of an earlier stage, shows the amniotic folds rising above the…

The guided interpretation is available in the app

Epistemis explains the visible findings, their rationale, and important mimics through guided interpretation and clinical pearls. Free and available offline.

Download Epistemis

Epistemis is educational review material. It is not a medical device, does not diagnose or prescribe treatment, and does not replace formal medical training, current clinical guidelines, or professional clinical judgment.

PreviousStages of embryonic development
Category
Annexes and placenta
Difficulty
media
Type
Diagram

Origin: Neal, Herbert V. (Herbert Vincent), 1869-1940; Rand, Herbert W. · Public domain · Wikimedia Commons · License Public domain

Download Epistemis