File:Stage10 SEM1.jpg: Difference between revisions

Revision as of 11:38, 14 August 2009

Carnegie Stages 10, 4-5 somites

MH - This description requires checking

Facts: Week 4, 22 - 23 days, 2 - 3.5 mm, Somite Number 4 - 12

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

Features: Somite Number 4 - 12, rostral neuropore, neural folds in region of developing brain, neural tube, somites, caudal neuropore, neural fold fuses, remnant of amniotic sac

Identify: rostral neuropore, neural folds in region of developing brain, neural tube, somites (note the different number formed), caudal neuropore, neural fold fuses, cut edge of amniotic sac

Events Ectoderm: Neural fold deeepens, edges approach midline, neural fold fuses, neural plate folds ventrally in brain region

Mesoderm: Somitogenesis, continued segmentation of paraxial mesoderm (4 - 12 somite pairs)

Image Source: Prof Kathy Sulik scanning electron micrographs of the Carnegie stages of the early human embryo. UNSW Embryology, no reproduction without permission. Carnegie Stages - Scanning Electron Micrography | Embryology page Created: 2007

Carnegie Stages Link

1 | 3 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23

About Carnegie Stages

Carnegie stages are named after the famous US Institute which began collecting and classifying embryos in the early 1900's. Stages are based on the external and/or internal morphological development of the embryo, and are not directly dependent on either age or size. The human embryonic period proper is divided into 23 Carnegie stages. Carnegie stages are based on the external and/or internal morphological development of the embryo, and are not directly dependent on either age or size. Criteria beyond morphological features include age in days, number of somites present, and embryonic length.

The Kyoto Collection images are reproduced with the permission of Prof. Kohei Shiota. Scanning electron micrographs of the Carnegie stages of the early human embryos are reproduced with the permission of Prof Kathy Sulik. Images are for educational tutorial/revision purposes and cannot be reproduced electronically or in writing without permission.

UNSW Embryology Links

Glossary Links

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

Dr Mark Hill 2009, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G

File history

Click on a date/time to view the file as it appeared at that time.

	Date/Time	Thumbnail	Dimensions	User	Comment
current	15:32, 10 August 2009		277 × 450 (28 KB)	MarkHill (talk \| contribs)	Carnegie Stages 10, 4-5 somites Features: brain fold, neural groove, amniotic sac, presomitic mesoderm, embryonic disc, primitive node, primative streak, primative groove, connecting stalk Facts: Week 3, 21 days, 4 - 5 somites, View: Dorsal view amnioti

You cannot overwrite this file.

File usage

The following 11 pages use this file:

@@ Line 17: / Line 17: @@
 Mesoderm: Somitogenesis, continued segmentation of paraxial mesoderm (4 - 12 somite pairs)
-Image source: [http://embryology.med.unsw.edu.au/wwwhuman/Stages/stage10SEM.htm Embryology page Created: 2007]
+'''Image Source:''' Prof Kathy Sulik scanning electron micrographs of the Carnegie stages of the early human embryo. UNSW Embryology, no reproduction without permission.  [http://embryology.med.unsw.edu.au/wwwhuman/Stages/Stagesem.htm Carnegie Stages - Scanning Electron Micrography] | [http://embryology.med.unsw.edu.au/wwwhuman/Stages/stage10SEM.htm Embryology page Created: 2007]
@@ Line 40: / Line 39: @@
 :Dr Mark Hill 2009, '''''UNSW Embryology''''' ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G
-[[Category:Human Embryo]] [[Category:Carnegie Stage]] [[Category:Week 4]] [[Category:Ectoderm]] [[Category:Neural]] [[Category:Week 3]]
+[[Category:Human Embryo]] [[Category:Carnegie Stage]] [[Category:Week 4]] [[Category:Ectoderm]] [[Category:Neural]] [[Category:Week 3]] [[Category:Scanning EM]]