File:Stage15 bf21.jpg

From Embryology

Stage15_bf21.jpg(600 × 450 pixels, file size: 27 KB, MIME type: image/jpeg)

Human embryo - 5 week

External 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 bf21.jpg. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/File:Stage15_bf21.jpg

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

File history

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Date/TimeThumbnailDimensionsUserComment
current13:58, 5 September 2011Thumbnail for version as of 13:58, 5 September 2011600 × 450 (27 KB)S8600021 (talk | contribs)==Human embryo - 5 week== External appearance appears to be about a Carnegie stage 15 embryo. ===Carnegie Stage 15 Information=== * Week 5, 35 - 38 days, 7 - 9 mm * Lateral view. Amniotic membrane removed. Events * Ectoderm: sensory placodes, lens

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