Carnegie stage 18: Difference between revisions
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'''Identify:''' pigmented eye, eyelid, nasolacrimal groove, external acoustic meatus, heart, digital rays, liver prominance, thigh, ankle, foot plate, umbilical cord | '''Identify:''' pigmented eye, eyelid, nasolacrimal groove, external acoustic meatus, heart, digital rays, liver prominance, thigh, ankle, foot plate, umbilical cord | ||
:'''Links:''' [[Week 7]] | [[Head_Development|Head]] | [[Lecture_-_Limb_Development|Lecture - Limb]] | [[Lecture_-_Head_Development|Lecture - Head Development]] | [[Lecture_-_Sensory_Development|Lecture - Sensory]] | [[2011_Lab_6|Science Practical - Head]] | [[[2011_Lab_10|Science Practical - Sensory]] | [[2011_Lab_8|Science Practical - Urogenital]] | [[:Category:Carnegie_Stage_18|Category:Carnegie Stage 18]] | [[Carnegie_stage_19|Stage 19]] | |||
{{Template:Carnegie_stages}} | {{Template:Carnegie_stages}} | ||
==Bright Field== | ==Bright Field== | ||
Revision as of 22:13, 26 October 2011
Introduction
Facts
Week 7, 44 - 48 days, 13 - 17 mm
Events
Ectoderm: sensory placodes, lens pit, otocyst,nasal pits moved ventrally, fourth ventricle of brain
Mesoderm: heart prominence
Head: 1st, 2nd and 3rd pharyngeal arch, forebrain, eye, auricular hillocks
Body: heart, liver, umbilical cord
Limb: upper and lower limb buds, foot plate, wrist, hand plate with digital rays
Features
Identify: pigmented eye, eyelid, nasolacrimal groove, external acoustic meatus, heart, digital rays, liver prominance, thigh, ankle, foot plate, umbilical cord
- Links: Week 7 | Head | Lecture - Limb | Lecture - Head Development | Lecture - Sensory | Science Practical - Head | [[[2011_Lab_10|Science Practical - Sensory]] | Science Practical - Urogenital | Category:Carnegie Stage 18 | Stage 19
- 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
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| Embryo in gestational sac | Embryo open sac |
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| Embryo with placentation (ectopic) | Embryo in amniotic sac |
- Stage 18 Links: Embryo in gestational sac | Embryo open sac | Embryo 2 and gestational sac | Embryo 2 | Carnegie stage 18
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
Additional Images
External ear Stages 14-23 and adult
Human embryonic shoulder girdle
17 mm 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 18. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/Carnegie_stage_18
- © Dr Mark Hill 2024, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G
