File:Stage12 bf3a.jpg

From Embryology

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Human Embryo

Carnegie Stage 12

Facts: Week 4, 26 days, 5 mm, Somite Number 21

View: Dorsal view, day 26, 21 somites, amniotic membrane removed, scale background

Features: day 26, 27 somites, forebrain, site of lens placode, site of otic placode , stomodeum, 1st pharyngeal arch, 2nd pharyngeal arch, 3rdpharyngeal arch, heart prominence, somite

Identify: groove/neural tube, forebrain, heart prominence, somite


Scanning EM image version of this image also available.

Original File Name: Stage12day26somite21-dorsal-bf3.jpg


Image version links: Large 1000px | 800px | Medium 600px | Small 400px


Related Images: Bright Field 1 | Bright Field 2 | Scanning EM image version


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, May 22) Embryology Stage12 bf3a.jpg. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/File:Stage12_bf3a.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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