File:Stage15 bf2.jpg

From Embryology

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Human embryo - 5 week

External size (10 mm length) and appearance appears to be about a Carnegie stage 15 embryo.

Carnegie stage 15

  • Week 5, 35 - 38 days, 7 - 9 mm
  • Lateral view. Amniotic membrane removed.
  • Ectoderm: sensory placodes, lens pit, otocyst, nasal pit, primary/secondary vesicles, fourth ventricle of brain,
  • Mesoderm: heart prominence
  • Head: 1st, 2nd and 3rd pharyngeal arch, forebrain, site of lens placode, site of otic placode, stomodeum
  • Body: heart, liver, umbilical cord, mesonephric ridge
  • Limb: upper and lower limb buds, hand plate
  • Identify: midbrain region, nasal pit, lens pit, 1st, 2nd and 3rd pharyngeal arches, 1st pharyngeal groove, maxillary and mandibular components of 1st pharyngeal arch, fourth ventricle of brain, heart prominence, cervical sinus, upper limb bud, mesonephric ridge, lower limb bud, umbilical cord


Stage 15 Links: Large image | Medium image | Small image | Virtual Slide | Carnegie stage 15


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


Image: Dr Ed Uthman (Houston, Texas) - other pathology images

http://creativecommons.org/licenses/by/2.0/




Cite this page: Hill, M.A. (2024, April 20) Embryology Stage15 bf2.jpg. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/File:Stage15_bf2.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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current14:22, 21 July 2010Thumbnail for version as of 14:22, 21 July 20101,874 × 2,000 (1.36 MB)S8600021 (talk | contribs)==Human embryo - 5 week== External appearance appears to be about a Carnegie stage 15 embryo. Original Author Legend :"This photo of an opened oviduct with an ectopic pregnancy features a spectacularly well preserved 10-millimeter embryo. It is uncom

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