Carnegie stage 22: Difference between revisions
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Gestational age {{GA}} week 10 | Gestational age {{GA}} week 10 | ||
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* Ectoderm: | * Ectoderm: | ||
* Mesoderm: heart prominence, ossification continues | * Mesoderm: heart prominence, ossification continues | ||
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====Stage 22 Selected Serial Section Images==== | ====Stage 22 Selected Serial Section Images==== | ||
{{Stage22selectsections}} | {{Stage22selectsections}} | ||
==Events== | |||
===References=== | |||
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==Additional Images== | ==Additional Images== |
Revision as of 09:57, 4 April 2016
Embryology - 3 May 2024 Expand to Translate |
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Introduction
Facts
Week 8, 54 - 56 days, 23 - 28 mm
Gestational age GA week 10
Summary
- Ectoderm:
- Mesoderm: heart prominence, ossification continues
- Head: nose, eye, external acoustic meatus
- Body: straightening of trunk, heart, liver, umbilical cord
- Limb: upper limbs longer and bent at elbow, foot plate with webbed digits, wrist, hand plate with separated digits
Features
- Identify: straightening of trunk, pigmented eye, eyelid, nose, external acoustic meatus, ear auricle, scalp vascular plexus, separated digits (fingers), thigh, ankle, 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 22 | Stage 23
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
Kyoto Collection
Lateral view. Amniotic membrane removed.
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.
Image source: Embryology page Created: 19.03.1999
Carnegie Collection
iBook - Carnegie Embryos | |
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Stage 22 Movies
Movies - Embryo Carnegie stage 22 - These are rotating embryo animations based upon reconstruction of serial slice images.
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These 3d movies were part of the UNSW Medical degree Independent Learning Project (ILP) prepared by Aashish Kumar (2006).
Stage 22 Serial Section Images
Virtual Slides
These are high resolution histological sections (Stain - Haematoxylin Eosin) through regions of the Stage 22 human embryo from the original serial section set shown below. See also High resolution image extracts. |
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High Resolution Images
Serial Sections
These are the original serial images prepared from embryo sections for Embryology practical classes and transferred online in 1996.
- Links: Carnegie stage 22 - serial sections | Carnegie stage 13 - serial sections | Carnegie stage 13
Labeled
A1L | A2L | A3L | A4L | A5L | A6L | A7L |
B1L | B2L | B3L | B4L | B5L | B6L | B7L |
C1L | C2L | C3L | C4L | C5L | C6L | C7L |
D1L | D2L | D3L | D4L | D5L | D6L | D7L |
E1L | E2L | E3L | E4L | E5L | E6L | E7L |
F1L | F2L | F3L | F4L | F5L | F6L | F7L |
G1L | G2L | G3L | G4L | G5L | G6L | G7L |
Unlabeled
A1 | A2 | A3 | A4 | A5 | A6 | A7 |
B1 | B2 | B3 | B4 | B5 | B6 | B7 |
C1 | C2 | C3 | C4 | C5 | C6 | C7 |
D1 | D2 | D3 | D4 | D5 | D6 | D7 |
E1 | E2 | E3 | E4 | E5 | E6 | E7 |
F1 | F2 | F3 | F4 | F5 | F6 | F7 |
G1 | G2 | G3 | G4 | G5 | G6 | G7 |
Stage 22 Selected Serial Section Images
About Stage 22 Embryo Sections - The Carnegie stage 22 human embryo is 27 mm (CRL) in size and approximately equal to day 54 - 56 of development (week 8). These images have been selected to show some key features of late embryo development.
- Links: Carnegie stage 22 - selected serial sections | Carnegie stage 22 - serial sections | Carnegie stage 22 | Embryo Serial Sections
Stage 22 serial unlabeled images | Stage 22 Serial labeled images |
Events
References
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, May 3) Embryology Carnegie stage 22. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/Carnegie_stage_22
- © Dr Mark Hill 2024, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G