Carnegie stage 11: Difference between revisions

From Embryology
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[[File:Stage11 sem4c.jpg]] [[File:Stage11 sem3c.jpg]] [[File:Stage11 sem2c.jpg]]
[[File:Stage11 sem4c.jpg]] [[File:Stage11 sem3c.jpg]] [[File:Stage11 sem2c.jpg]]


[[File:Stage11 sem10c.jpg]] [[File:Stage11_sem11c.jpg]] [[File:Stage11_sem20c.jpg]]
[[File:Stage11 sem10c.jpg]] [[File:Stage11_sem20c.jpg]]
 
[[File:Stage11_sem11c.jpg|frame|This is a scanning EM of the embryo fractured close to the midline to show the hindbrain rhombomeres.
Features: surface ectoderm, neural tube, hindbrain rhombomeres, forebrain, buccopharyngeal membrane, yolk sac, 25 days, 19 somite pairs]]


==Kyoto Collection==
==Kyoto Collection==

Revision as of 01:40, 4 May 2010

Introduction

Stage11 bf2c.jpg

Facts

Week 4, 23 - 26 days, 2.5 - 4.5 mm, Somite Number 13 - 20

Events

Ectoderm: Neural tube continues to close, Rostral neuropore closes

Mesoderm: continued segmentation of paraxial mesoderm (13 - 20 somite pairs), heart tube bending


Features

rostral neuropore closing, forebrain, neural tube in region of developing spinal cord, somites, caudal neuropore, connecting stalk, amnion

Identify: heart, rostral neuropore closing, forebrain, neural tube in region of developing spinal cord, somites, caudal neuropore, connecting stalk, amnion


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

Stage11 bf2b.jpg Stage11 bf1b.jpg

Stage11 bf3b.jpg Stage11 bf4b.jpg

Stage11 bf5b.jpg Stage11 bf6b.jpg

Scanning EM

This is a scanning EM of the embryo dorsal view showing the neural tube closing with open neuropores and the paired somites visible through the thin ectoderm. Features: surface ectoderm, neural tube, cranial (anterior) neuropore, caudal (posterior) neuropore, somites, heart, cut edge of amnion, 24 days, 13 somite pairs

Stage11 sem4c.jpg Stage11 sem3c.jpg Stage11 sem2c.jpg

Stage11 sem10c.jpg Stage11 sem20c.jpg

This is a scanning EM of the embryo fractured close to the midline to show the hindbrain rhombomeres. Features: surface ectoderm, neural tube, hindbrain rhombomeres, forebrain, buccopharyngeal membrane, yolk sac, 25 days, 19 somite pairs

Kyoto Collection

Stage11 bf7b.jpg

View: This is a dorsolateral view of embryo. Amniotic membrane removed.

Image source: Embryology page Created: 19.03.1999

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

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


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.


Cite this page: Hill, M.A. (2024, April 18) Embryology Carnegie stage 11. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/Carnegie_stage_11

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