File:Stage7 bf5.jpg: Difference between revisions
(==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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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. | 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. | ||
[[Category:Human Embryo]] [[Category:Carnegie Stage]] [[Category:Carnegie Stage 7]] [[Category:Week 3]] [[Category:Gastrulation]] [[Category:Ectopic Pregnancy]] | |||
[[Category:Human Embryo]] [[Category:Carnegie Stage]] [[Category:Carnegie Stage 7]] [[Category:Week 3]] [[Category:Gastrulation]] |
Revision as of 14:49, 21 July 2010
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_bd228ca576_o.jpg
http://www.flickr.com/photos/euthman/3944578509/
Uploaded to Flickr on September 22, 2009 by Ed Uthman Image (pathologist in Houston, Texas)
http://creativecommons.org/licenses/by/2.0/
Image version links: ExtraLarge 1712x1206px | Large 1024x721px | Medium 500x352px | Small 240x169px
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.
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current | 14:43, 21 July 2010 | 1,712 × 1,206 (875 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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