File:Stage10 sem6 annotated.jpg

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Human Embryo (Carnegie Stage 10)

Annotated scanning electron micrograph dorsal view of Carnegie Stage 10 human embryo.

This dorsal view of the early embryo mainly shows the neural groove before its closing to form the neural tube, the precursor of the spinal cord and brain.


  • Week 4, 22 - 23 days, 2 - 3.5 mm, Somite number 4 - 12
  • Neural groove forming from neural plate on upper surface.
    • large brain fold region to top of image.
    • narrow spinal cord region to bottom of image.
  • Heart bulge can be seen on right ventral surface.
  • Connecting stalk to the bottom of the image.
  • Amniotic membrane cut edge shown at edge of developing embryo.


Carnegie Stage 10 Links: vertical view | horizontal view | annotated | Carnegie stage 10 | Lecture - Early Neural | Neural System Development | Week 4



Stage 10 Links: Week 4 | Gastrulation | Lecture | Practical | Image Gallery | Carnegie Embryos | Embryos | Category:Carnegie Stage 10 | Next Stage 11
  Historic Papers: 1910 | 1917 | 1926 | 1939 | 1943 | 1957 | 1985


Week: 1 2 3 4 5 6 7 8
Carnegie stage: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23



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


Carnegie Stages: 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | About Stages | Timeline



Cite this page: Hill, M.A. (2024, April 24) Embryology Stage10 sem6 annotated.jpg. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/File:Stage10_sem6_annotated.jpg

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© Dr Mark Hill 2024, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G

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current17:44, 17 August 2014Thumbnail for version as of 17:44, 17 August 2014720 × 960 (122 KB)Z8600021 (talk | contribs)==Human Embryo (Carnegie Stage 10)== Annotated scanning electron micrograph dorsal view of Carnegie Stage 10 human embryo. This dorsal view of the early embryo mainly shows the neural groove before its closing to form the n...

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