File:Stage20-23 limbs a.jpg

From Embryology

Stage20-23_limbs_a.jpg(800 × 301 pixels, file size: 19 KB, MIME type: image/jpeg)

Human Embryo

Carnegie stage 20 to 23 (week 8) extracts showing upper and lower limb development (Images are not to scale).

Note that during week 8 for both limbs:

  • more advanced development of upper limb at all stages (about 2 days).
  • growth in overall length.
  • rotation of limbs.
  • towards the end of this week the more obvious elbow/knee, shoulder/hip.
  • development of digits (fingers, toes) from digital rays.
  • loss of cells by apoptosis between the digits.

Image version links: Large 1000px | 800px | Medium 600px | Limb Development

Cite this page: Hill, M.A. (2024, June 16) Embryology Stage20-23 limbs a.jpg. Retrieved from

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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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