Carnegie stage 19
Introduction
Facts
Week 7, 48 - 51 days, 16 - 18 mm
Events
Ectoderm: sensory placodes, lens pit, otocyst, nasal pits moved ventrally, fourth ventricle of brain
Mesoderm: heart prominence, ossification continues
Head: forebrain, eye, external acoustic meatus
Body: straightening of trunk, heart, liver, umbilical cord
Features
eyelid, eye, external acoustic meatus, auricle of external ear, digital ray, wrist, liver prominence
Identify: straightening of trunk, pigmented eye, eyelid, external acoustic meatus, digital rays, liver prominance, thigh, ankle, foot plate, umbilical cord
- Links: Week 7 | System Development | Lecture - Limb | Lecture - Head Development | Lecture - Sensory | Science Practical - Head | Science Practical - Sensory | Science Practical - Urogenital | Category:Carnegie Stage 19 | Stage 20
- 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
Bright Field
- Facts: Week 7, 48 - 51 days, 16 - 18 mm
- View: Lateral view. Amniotic membrane removed.
- Features: eyelid, eye, external acoustic meatus, auricle of external ear, digital ray, wrist, liver prominence
- Identify: straightening of trunk, pigmented eye, eyelid, external acoustic meatus, digital rays, liver prominance, thigh, ankle, foot plate, umbilical cord
Image: Dr Steven O'Connor (Houston, Texas) - Other embryo images.
- 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, May 2) Embryology Carnegie stage 19. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/Carnegie_stage_19
- © Dr Mark Hill 2024, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G
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 19: 4501 Right | 4501 Anterior | 4501 Left | 6824 Right | 6824 Anterior | 6824 Left | 8092 Right | 8092 Anterior | 8092 Left
Photographs
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| Image - Ed Uthman (pathologist in Houston, Texas)
Image version links: ExtraLarge 2054x3081px | Large 683 x 1024px | Medium 333 x 500px | Small 160 x 240px |
Image - Dr Steven O'Connor (Houston, Texas)
Image version links: ExtraLarge 387×2592px | Large 1024x685px | Medium 500x334px | Small 240x161px |
Additional Images
Stage 19 Optical Projection Tomography
External ear Stages 14-23 and adult
- Stage18-19 Cleft Primary Palate.jpg
Cleft primary palate
- Filee:Human Embryo 17.8mm.jpg
historic drawing of human embryo
- 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, May 2) Embryology Carnegie stage 19. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/Carnegie_stage_19
- © Dr Mark Hill 2024, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G
