File:Stage7 bf53.jpg: Difference between revisions
No edit summary |
|||
Line 1: | Line 1: | ||
==Human Embryo Stage 7== | ==Human Embryo Stage 7 - Developing Placental Villi== | ||
Villi from [[Carnegie stage 7]] embryo. | Villi from [[Carnegie stage 7]] embryo. |
Revision as of 15:41, 28 July 2012
Human Embryo Stage 7 - Developing Placental Villi
Villi from Carnegie stage 7 embryo.
- Image Links: Original full image | Trilaminar embryo excerpt | Villi excerpt 1 | Villi excerpt 2
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
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.
Reference
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)
File history
Click on a date/time to view the file as it appeared at that time.
Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 13:28, 5 September 2011 | 500 × 375 (74 KB) | S8600021 (talk | contribs) | villi from Carnegie stage 7 embryo |
You cannot overwrite this file.
File usage
The following 2 pages use this file: