Carnegie stage 19: Difference between revisions

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Embryology - 19 May 2024 Expand to Translate
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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

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

Carnegie stage 19

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

Stage 19 Links: Embryo open gestational sac | Embryo | Embryo (rotated) | Carnegie stage 19

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 19) Embryology Carnegie stage 19. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/Carnegie_stage_19

What Links Here?

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

iBook - Carnegie Embryos
	iTunes link \| iBook Store Description - Imagine the excitement of seeing this incredible early period of human development for the first time. Now consider that much of our initial understanding of human development is based upon study of historic embryo collections. You can now look at these historic images of the first 8 weeks after fertilisation and explore for yourself the changes that occur in human development during this key period. This current book is designed as an atlas of the Carnegie embryo stages with some brief notes and additional information covering the first 8 weeks of development. These images are from from the beginning of last century and are one of the earliest documented series of human embryos collected for basic research and medical education on development. I hope you enjoy learning about the amazing early events that begin to make and shape us. This is the second book in a series of educational releases from UNSW Embryology. Release: First Edition - Mar 12, 2012 ISBN 978-0-7334-3148-7 Print Length 82 Pages, 25.8 MB Language English. PDF Preview version 3.87 MB (Read the associated information, this is an edited educational preview version with many features not functioning). The current website also includes numerous embryo images from this textbook (see Embryonic Development and Carnegie Embryos).

Photographs


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
Human Embryo 17.8mm.jpg

historic drawing of human embryo
Human Embryo 17.8 mm

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 19) Embryology Carnegie stage 19. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/Carnegie_stage_19

What Links Here?

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-:'''Links:''' [[Week 7]] | [[Human_System_Development|System Development]] | [[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_19|Category:Carnegie Stage 19]] | [[Carnegie_stage_20|Stage 20]]
+:'''Links:''' [[Week 7]] | [[Human_System_Development|System Development]] | [[Lecture_-_Limb_Development|Lecture - Limb]] | [[Lecture_-_Head_Development|Lecture - Head Development]] | [[Lecture_-_Sensory_Development|Lecture - Sensory]] | [[ANAT2341_Lab_6|Science Practical - Head]] | [[ANAT2341_Lab_10|Science Practical - Sensory]] | [[ANAT2341_Lab_8|Science Practical - Urogenital]] | [[:Category:Carnegie_Stage_19|Category:Carnegie Stage 19]] | [[Carnegie_stage_20|Stage 20]]
-{{Template:Carnegie_stages}}
+{{Carnegie_stages}}
 ==Bright Field==