File:Stage12 sem1.jpg

Human Embryo Carnegie Stage 12

Carnegie Stage 12

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

View: Lateral view, day 26, 21 somites, amniotic membrane removed

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: forebrain, site of lens placode, site of otic placode, stomodeum, 1st pharyngeal arch, 2nd pharyngeal arch, 3rd pharyngeal arch, heart prominence, somite

Bright field image version of this image also available.

Original File Name: Stage12day26somite21-ventrolateral-heart-brain-sem1.jpg

Image version links

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Stage 12 SEM Images: Bright Field 1 | Bright Field 3 | Bright Field 3 | SEM1 | SEM2 | SEM3 | SEM4 dorsolateral head and arches | SEM5 lateral head and arches | SEM6 ventrolateral head and arches | SEM7 lateral | SEM8 ventrolateral | SEM9 cloacal membrane | SEM9 labeled | Carnegie stage 12

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 16) Embryology Stage12 sem1.jpg. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/File:Stage12_sem1.jpg

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