Carnegie stage 12: Difference between revisions
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===Facts=== | ===Facts=== | ||
Week 4, 26 - 30 | Week 4, 26 - 30 days, 3 - 5 mm, Somite Number 21 - 29 | ||
Gestational Age {{GA}} week 6 | |||
===Events=== | ===Events=== | ||
* Ectoderm: Neural tube continues to close, Caudal neuropore closes, forebrain | |||
* Mesoderm: continued segmentation of paraxial mesoderm (21 - 29 somite pairs), heart prominence | |||
Ectoderm: Neural tube continues to close, Caudal neuropore closes, forebrain | * Head: 1st, 2nd and 3rd pharyngeal arch, forebrain, site of lens placode, site of otic placode, stomodeum | ||
* Body: heart, liver, umbilical, early upper limb bulge | |||
Mesoderm: continued segmentation of paraxial mesoderm (21 - 29 somite pairs), heart prominence | |||
Head: 1st, 2nd and 3rd pharyngeal arch, forebrain, site of lens placode, site of otic placode, stomodeum | |||
Body: | |||
heart, liver, umbilical, early upper limb bulge | |||
===Features=== | ===Features=== | ||
* 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 | |||
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 | ||
Identify: forebrain, site of lens placode, site of otic placode, stomodeum, 1st pharyngeal arch, 2nd pharyngeal arch, 3rd pharyngeal arch, heart prominence, somite | |||
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Revision as of 14:34, 15 September 2014
Embryology - 26 Apr 2024 Expand to Translate |
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Introduction
FactsWeek 4, 26 - 30 days, 3 - 5 mm, Somite Number 21 - 29 Gestational Age GA week 6 Events
Features
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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 |
- 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
Bright Field
Scanning EM
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.
Kyoto Collection
View: Lateral view, day 26, 27 somites, Amniotic membrane removed.
Image source: The Kyoto Collection images are reproduced with the permission of Prof. Kohei Shiota and Prof. Shigehito Yamada, Anatomy and Developmental Biology, Kyoto University Graduate School of Medicine, Kyoto, Japan for educational purposes only and cannot be reproduced electronically or in writing without permission.
Carnegie Collection
- 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
iBook - Carnegie Embryos | |
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Additional Images
Gray's Anatomy Fig. 472
Graphic reconstruction of embryo from serial sections PMID 17232769
- Historic Papers: 22 Somites | 23 Somites | 25 Somites | 27 Somites | Brain Vascular System of the Human Embryo
Glossary Links
- Glossary: A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | Numbers | Symbols | Term Link
Cite this page: Hill, M.A. (2024, April 26) Embryology Carnegie stage 12. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/Carnegie_stage_12
- © Dr Mark Hill 2024, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G