Carnegie stage 23: Difference between revisions
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[[Category:Human Embryo]] [[Category:Carnegie Stage]] [[Category:Carnegie Stage 23]] [[Category:Week 8]] [[Category:Carnegie Embryo 4570]] | [[Category:Human Embryo]] [[Category:Carnegie Stage]] [[Category:Carnegie Stage 23]] [[Category:Week 8]] [[Category:Carnegie Embryo 4570]] [[Category:Carnegie Embryo 4570]] | ||
Revision as of 14:31, 21 April 2012
Introduction
This is the final Carnegie stage of embryonic development in Week 8. After this development is considered fetal for the remainder of the pregnancy.
Facts
Week 8, 56 - 60 days, 27 - 31 mm
Events
Ectoderm:
Mesoderm: ossification continues
Head: eyelids, external ears, rounded head
Body: straightening of trunk, intestines herniated at umbilicus
Limbs: hands and feet turned inward
Features
scalp vascular plexus, eylid, eye, nose, auricle of external ear, mouth, shoulder, arm, elbow, wrist, toes separated, sole of foot, umbilical cord
- Links: Week 8 | System Development | Lecture - Limb | Lecture - Head Development | Lecture - Sensory | Science Practical - Head | Science Practical - Sensory | Science Practical - Urogenital | Category:Carnegie Stage 23 | Fetal Development
- 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
Kyoto Collection
View: This is a dorsolateral view of embryo. Amniotic membrane removed.
Image source: Embryology page Created: 19.03.1999
Image source: The Kyoto Collection images are reproduced with the permission of Prof. Kohei Shiota and Prof. Shigehito Yamada, Anatomy and Developmental Biology, Kyoto University Graduate School of Medicine, Kyoto, Japan for educational purposes only and cannot be reproduced electronically or in writing without permission.
Carnegie Collection
- Carnegie stage 23: 4570 right | 4570 anterior | 4570 left | 4570 posterior | 4570 large right | 4570 large left | Rotation | Carnegie Embryos
Additional Images
Embryo and placenta
External ear Stages 14-23 and adult
Stage 20-23 limbs
Human embryonic shoulder girdle
Stage 23 Optical Projection Tomography
- 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, April 27) Embryology Carnegie stage 23. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/Carnegie_stage_23
- © Dr Mark Hill 2024, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G
