File:Stage7 bf5b.jpg
Stage7_bf5b.jpg (500 × 352 pixels, file size: 216 KB, MIME type: image/jpeg)
Human embryo - 3 week
Appearance of section looks to be about a Carnegie stage 7 embryo.
Original Author Legend - Primitive Trilaminar Human Embryo in Tubal Pregnancy (40X)
- "I think this is at about the same developmental stage as the Hertig-Rock embryo of 1945, which has been variously estimated at 16.5 or 19 days postovulation (4 to 5 weeks by conventional obstetrical dating, counting from the first day of the last menstrual period)."
Original file name: 3944578509_58800f1ec7.jpg
http://www.flickr.com/photos/euthman/3944578509/
Uploaded to Flickr on September 22, 2009 by Ed Uthman Image (pathologist in Houston, Texas)
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Human Embryo Stage 7 Information
Carnegie stage 7
Features: embryonic disc, primitive node, primative streak, primitive groove, yolk sac
Facts: Week 3, 15 - 17 days, 0.4 mm
View 1: embryonic disc, showing the epiblast viewed from the amniotic (dorsal) side.
Events: Gastrulation is continuing as cells migrate from the epiblast, continuing to form mesoderm.
Mesoderm lies between the ectoderm and endoderm as a continuous sheet except at the buccopharyngeal and cloacal membranes. These membranes have ectoderm and endoderm only and will lie at the rostral (head) and caudal (tail) of the gastrointestinal tract.
Original file name: Stage7n3.jpg UNSW Embryology Carnegie Stage 7
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 14:46, 21 July 2010 | 500 × 352 (216 KB) | S8600021 (talk | contribs) | ==Human embryo - 3 week== Appearance of section looks to be about a Carnegie stage 7 embryo. Original Author Legend - Primitive Trilaminar Human Embryo in Tubal Pregnancy (40X) :"I think this is at about the same developmental stage as the Hertig-Roc |
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