File:Stage8 sem2.jpg

From Embryology

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Human Scanning EM showing the Neurenteric Canal

Human embryo (Stage 8, day 18) showing the neurenteric canal and nodal cilia.

The neurenteric canal (archenteric canal, blastoporic canal, Braun's canal) is a transient communication that occurs briefly between the neural tube, notochordal canal, and gut endoderm.

The nodal cilia are thought to act to "stir" the overlying fluid layer at the time of gastrulation. This fluid contains secreted morphogens that are moved in one direction and therefore may have a role in establishing the initial embryo left/right axis.

Stage 8 Links: Week 3 | Gastrulation | Lecture | Lecture | Somitogenesis | Lecture - Mesoderm | Lecture - Ectoderm | Lecture - Early Vascular | Science Practical | Carnegie Embryos | Category:Carnegie Stage 8 | Next Stage 9
  Historic Papers: 1920 Mateer Embryo | 1931 Head-Process | 1931 Prochordal Plate | 1931 neurenteric canal

Image Source: Scanning electron micrographs of the Carnegie stages of the early human embryos are reproduced with the permission of Prof Kathy Sulik, from embryos collected by Dr. Vekemans and Tania Attié-Bitach. Images are for educational purposes only and cannot be reproduced electronically or in writing without permission.

Embryonic Development


Original file name:Stage8day18neuroentericcanal.jpg

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current08:58, 22 August 2009Thumbnail for version as of 08:58, 22 August 2009822 × 1,000 (142 KB)S8600021 (talk | contribs)Human embryo (Stage 8, day 18) Scanning EM showing detail of the neuroenteric canal. Original file name:Stage8day18neuroentericcanal.jpg {{Template:SEM}}