File:Stage11 sem21.jpg

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Human Embryo Carnegie stage 11

Carnegie stage 11, 25 days, 19 somite pairs, 100 μm scale bar.

Scanning EM lateral view embryo fractured dorsally (box region) to show the neural crest and neural tube.

Head Region - Cranial neuropore open. Otic placode indenting on dorsal side behind the second pharyngeal arch. First pharyngeal arch lying below and beside the stomedeum.

Body Region - Ventral body wall removed to show pericardial cavity, heart tube and midgut (yolk sac also removed).


Carnegie stage 11: Week 4, 23 - 26 days, 2.5 - 4.5 mm, Somite Number 13 - 20



Stage 11 SEM Images: dorsolateral whole embryo | dorsal embryo | lateral embryo | lateral head | lateral head with overlay | embryo cross-section | ventrolateral head | ventrolateral head with overlay | ventral head | buccopharyngeal membrane | neural crest | posterior neuropore | anterior neuropore | Carnegie stage 11


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.


Cite this page: Hill, M.A. (2019, March 23) Embryology Stage11 sem21.jpg. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/File:Stage11_sem21.jpg

What Links Here?
© Dr Mark Hill 2019, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G

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. (2019, March 23) Embryology Stage11 sem21.jpg. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/File:Stage11_sem21.jpg

What Links Here?
© Dr Mark Hill 2019, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G

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current17:03, 30 October 2010Thumbnail for version as of 17:03, 30 October 2010600 × 447 (79 KB)S8600021 (talk | contribs)'''Human Embryo''' Carnegie stage 11 25 days, 19 somite pairs Facts: Week 4, 23 - 26 days, 2.5 - 4.5 mm, Somite Number 13 - 20 View: This is a scanning EM of the embryo fractured to show the neural crest, neural tube, notochord and somites. Features:
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