File:Stage13 bf4.jpg

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Human Embryo Carnegie Stage 13

5mm Embryo appears as Carnegie Stage 13 from ectopic pregnancy.

Stage 13

Week 4-5, 26 - 30 days, 3 - 5 mm, Somite Number 21 - 29
Ectoderm: Neural tube continues to close, Caudal neuropore closes, forebrain
Mesoderm: continued segmentation of paraxial mesoderm (21 - 29 somite pairs), heart prominence
Head: 1st, 2nd and 3rd pharyngeal arch, forebrain, site of lens placode, site of otic placode, stomodeum
Body: heart, liver, umbilical, early upper limb bulge

Image: Dr Steven O'Connor (Houston, Texas)

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 4) Embryology Stage13 bf4.jpg. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/File:Stage13_bf4.jpg

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current	06:12, 12 August 2011		1,200 × 800 (132 KB)	S8600021 (talk \| contribs)	==Human Embryo Carnegie Stage 13== Week 4-5, 26 - 30 days, 3 - 5 mm, Somite Number 21 - 29 * Ectoderm: Neural tube continues to close, Caudal neuropore closes, forebrain * Mesoderm: continued segmentation of paraxial mesoderm (21 - 29 somite pairs), hea

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