Carnegie stage 19
Embryology - 15 Jun 2024 Expand to Translate |
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Introduction
Facts
Week 7, 48 - 51 days, 16 - 18 mm
Gestational Age GA - week 9
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
Week: | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
Carnegie stage: | 1 2 3 4 | 5 6 | 7 8 9 | 10 11 12 13 | 14 15 | 16 17 | 18 19 | 20 21 22 23 |
- 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
Virtual Slide
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- 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, June 15) 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
Scanning EM
Ventral view of head showing upper lip, maxilla and nasal region.
Image Source: Prof Virginia Diewert
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
iBook - Carnegie Embryos | |
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Photographs
Virtual Slide | |
Image - Dr Ed Uthman | Image - Dr Steven O'Connor |
Embryo Virtual Slides
Stage 19 - Left Lateral |
Stage 19 | Embryo Slides |
Hill Collection
Righthand view | Lefthand view |
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Image source: The images from the Hill Collection (part of the Embryological Collection) are reproduced with the permission of the Museum für Naturkunde, Leibniz Institute for Research on Evolution and Biodiversity. Images are for educational purposes only and must not be reproduced electronically or in writing without permission from the Museum für Naturkunde Berlin.
Embryo Virtual Slides
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Additional 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, June 15) 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