File:Stage19 em01.jpg: Difference between revisions

Human Embryo Carnegie Stage 19

Scanning election micrograph (SEM). View: Ventral view head. Amniotic membrane removed. (Week 7, Carnegie stage 19, 48 - 51 days, CRL 16 - 18 mm. (see labeled image)

This electron micrograph shows a detailed view of the maxilla and upper lip development during embryonic week 7 (GA 9). This is the last in a series (stage 16 to 19) of EM images focussing on this developmentally important region and time for embryonic cleft lip and palate.

Note:

• completely fused upper lip, with indentation still present at philtrum.
• narrowing nasal openings

EM Links: Image - stage 16 | Labeled Image - stage 16 | Image - stage 17 | labeled Image - stage 17 | Image - stage 18 | Labeled Image - stage 18 | Image - stage 19 | Labeled Image - stage 19 | Palate Development

SEM Image Source: Prof Virginia Diewert

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

Cite this page: Hill, M.A. (2024, May 18) Embryology Stage19 em01.jpg. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/File:Stage19_em01.jpg

What Links Here?

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