File:Stage11 sem101.jpg
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Human Embryo Carnegie stage 11
Week 4 Carnegie stage 11 25 days, 19 somite pairs. This is a scanning EM of the embryo fractured to show the neural tube, notochord and somites.
Neural tube level of the body (note somites are present) showing the location of future tube regions.
Neural tube regions
- roof plate - dorsal region
- alar plate - dorsal lateral region (sensory input fine touch, proprioception, and vibration)
- basal plate - ventral lateral region (motor output to skeletal muscle)
- floor plate - ventral region
Regional patterning
- roof plate region - signals from surface ectoderm
- alar plate region - signals from surface ectoderm
- basal plate region - signals from the notochord and floor plate
- floor plate region - signals from the notochord
Neural tube level of the head contains similar regions that differentiate to form other brain structures.
- Links: unlabeled version | labeled version | labeled neural
- 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.
Stage 22 Spinal Cord Links: image unlabeled | image labeled | image low resolution | ANAT3411 | spinal cord | meninges
Virtual Slide Features - Stage 22 Spinal Cord | ||
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Spinal Cord Features |
The links shown are to specific features shown on the Human embryo (stage 22) Spinal Cord virtual slide. See also notes on Spinal Cord Development
Clicking the text will open the slide at a detailed view with the structure generally located in the centre of the view. The slide then can also be zoomed out from the set magnification using the controls in the upper left or the mouse. Use your browser back button to return to this table. Other Features
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All Virtual Slides | Making your own Link - You can also make your own selected feature view. (See also Permalink help)
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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 |
Image version links: Large 1000px | 800px | Medium 600px | Small 400px
Cite this page: Hill, M.A. (2024, June 20) Embryology Stage11 sem101.jpg. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/File:Stage11_sem101.jpg
- © Dr Mark Hill 2024, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G
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File usage
The following 46 pages use this file:
- BGDA Lecture - Development of the Nervous System
- Human Embryo SEM
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