File:Stage11 sem4.jpg
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Human Embryo Carnegie stage 11
This is a ventral view of the Week 4 embryo head, showing the stomodeum (stomatodeum or stomatodaeum) region with the floor of this region occupied by the degenerating buccopharyngeal membrane. Loss of buccopharyngeal membrane opens the gastrointestinal and respiratory tract to amniotic fluid for the remainder of development. A bright field version of this image is also available.
Relative to the stomodeum:
- Cranial (above) lies brain bulge covered in thin layer of surface ectoderm.
- Lateral (beside) lie the primordia of the first pharyngeal arch.
- Inferior (below) lies the developing heart (lower left of the image).
Carnegie stage 11 25 days, 20 somite pairs
Stage 11 Facts: Week 4, 23 - 26 days, 2.5 - 4.5 mm, Somite Number 13 - 20. View: This is a scanning EM ventral view of the embryo head. Features: brain folds, heart, first pharyngeal arch, buccopharyngeal membrane
Image version links: Large 1000px | 800px | Medium 600px
- 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.
- 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, June 15) Embryology Stage11 sem4.jpg. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/File:Stage11_sem4.jpg
- © Dr Mark Hill 2024, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G
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- AACP Meeting 2013 - Face Embryology
- ANAT2341 Lab 6 - Early Embryo
- Abnormal Development - Thalidomide
- BGDB Face and Ear - Early Embryo
- BGDB Gastrointestinal - Activity 1
- BGD Lecture - Face and Ear Development
- BGD Lecture - Gastrointestinal System Development
- Buccopharyngeal membrane
- Carnegie stage 11
- Draft 2016
- Gastrointestinal Tract - Mouth Development
- Gastrointestinal Tract - Oesophagus Development
- Gastrointestinal Tract Development
- Human Embryo - Scanning electron microscopy
- Human Embryo SEM
- K12 Thalidomide
- Lecture - Gastrointestinal Development
- Lecture - Gastrointestinal Development 2013
- Lecture - Head Development
- Lecture - Respiratory Development
- SH Lecture - Respiratory System Development
- Talk:Carnegie stage 11
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- Template:Carnegie stage 11-14 image table
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