Connecting stalk

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Connecting stalk
Latin pedunculus connectans
Code TE E5.
Anatomical terminology

The connecting stalk is a yolk sac diverticulum.[1]

It is derived from extraembryonic mesoderm.[2]

Progressive expansion of the amnion from the umbilical ring (surrounding the roots of the vitelline duct and connecting stalk) creates a tube of amniotic membrane. The amniotic membrane and its contents form the Umbilical cord (Larsen's Embryology, 5th edition, p138).


  1. ^ M. W. Rana (28 July 1998). Human embryology made easy. CRC Press. pp. 66–. ISBN 978-90-5702-545-7. Retrieved 22 May 2011. 
  2. ^ Schoenwolf, Gary C.; Bleyl, Steven B.; Brauer, Philip R.; Francis-West, Philippa H. (2012-05-07). Larsen's Human Embryology: with STUDENT CONSULT Online Access. Elsevier Health Sciences. p. 57. ISBN 9781455727919.