File:Stage14 bf24.jpg

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Human Embryo (Carnegie stage 14)

Embryo appears as Carnegie Stage 14 from ectopic pregnancy.

  • Embryo is partially enclosed in amniotic membrane.
  • Larger cavity is chorionic space (coelom).
  • Small sac at left connected to umbilical region is the yolk sac.
  • Placental villi are visible outside chorionic membrane.
  • Placental blood vessels are visible extending lower left from umbilicus.
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
Week: 1 2 3 4 5 6 7 8
Carnegie stage: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23

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.



Cite this page: Hill, M.A. (2024, June 13) Embryology Stage14 bf24.jpg. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/File:Stage14_bf24.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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Date/TimeThumbnailDimensionsUserComment
current15:46, 16 March 2014Thumbnail for version as of 15:46, 16 March 20141,231 × 923 (156 KB)Z8600021 (talk | contribs)==Human Embryo Carnegie Stage 14== Embryo appears as Carnegie Stage 14 from ectopic pregnancy. * Embryo is partially enclosed in amniotic membrane. * Larger cavity is chorionic space (coelom). * Small sac at left connected to umbilical region is the yo...

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