Body-stalk Information & Body-stalk Links at HealthHaven.com

Body-stalk

Diagram showing the expansion of amnion and delimitation of the umbilicus.

Section through the embryo.
Gray's	subject #10 53

The caudal end of the embryo is at first connected to the chorion by a band of mesoderm called the body-stalk, but with the formation of the caudal fold the body-stalk assumes a ventral position; a diverticulum of the yolk-sac extends into the tail fold and is termed the hind-gut.

The function of the body-stalk is later replaced by the umbilical cord.

[edit] Additional images

Human embryo—length, 2 mm. Dorsal view, with the amnion laid open. X 30.	Human embryo of 2.6 mm.	Diagram showing later stage of allantoic development with commencing constriction of the yolk-sac.	Model of human embryo 1.3 mm. long.
Section through ovum imbedded in the uterine decidua.	Embryo between eighteen and twenty-one days.	Human embryo about fifteen days old. Brain and heart represented from right side. Digestive tube and yolk sac in median section.

[edit] External links

Swiss embryology (from UL, UB, and UF) hdisqueembry/triderm0

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