File:Stage14 bf21.jpg

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Human Embryo Carnegie Stage 14

Embryo appears as Carnegie Stage 14 from ectopic pregnancy.

  • Ventral view of embryo is partially enclosed in amniotic membrane.
  • Larger cavity is chorionic space (coelom).
  • Placental villi are visible outside chorionic membrane.
  • Small sac (right) connected to umbilical region is the yolk sac.
  • Vitelline blood vessels vessels can be seen in the yolk stalk connecting the yolk sac to the embryo.


Stage 14 Links: Embryo lateral view | Embryo lateral view (small) | Embryo lateral view (medium) | Embryo lateral view (large) | Virtual Slide | Embryo ventral view (small) | Embryo ventral view (medium) | Embryo ventral view (large) | Virtual Slide | Carnegie stage 14 | Week 5


Stage 14

  • Week 5, 31 - 35 days, 5 - 7 mm
  • Gestational Age GA week 7
  • Mesoderm: continued segmentation of paraxial mesoderm (30+ 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, upper and early lower limb bud


Image: Dr Steven O'Connor (Houston, Texas) - Other embryo images.


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, June 13) Embryology Stage14 bf21.jpg. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/File:Stage14_bf21.jpg

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

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current14:34, 28 February 2014Thumbnail for version as of 14:34, 28 February 20142,000 × 1,334 (323 KB)Z8600021 (talk | contribs)==Human Embryo Carnegie Stage 14== Embryo appears as Carnegie Stage 14 from ectopic pregnancy. * Ventral view of embryo is partially enclosed in amniotic membrane. * Larger cavity is chorionic space (coelom). * Small sac connected to umbilical region i...

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