Carnegie stage 14: Difference between revisions

Revision as of 13:42, 14 April 2014

Embryology - 18 Apr 2024 Expand to Translate
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Introduction

Facts

Week 5, 31 - 35 days, 5 - 7 mm

Gestational Age - week 7

View: Lateral view. Amniotic membrane removed.

Events

Ectoderm: sensory placodes, lens pit, otocyst, nasal placode, primary/secondary vesicles, fourth ventricle of brain,

Mesoderm: continued segmentation of paraxial mesoderm (more than 30 somite pairs), heart prominence

Head: 1st, 2nd and 3rd pharyngeal arch, forebrain, site of lens placode, site of otic placode, stomodeum

Body: heart, liver, umbilical cord, mesonephric ridge

Limb: upper and lower limb buds

Features

midbrain, nasal placode, lens pit, 1,2,3 pharyngeal arches, fourth ventricle of brain, 1st pharyngeal groove, heart prominence, cervical sinus, upper limb bud, mesonephric ridge, lower limb bud, umbilical cord.

Identify: midbrain region, nasal placode, lens pit, 1st, 2nd and 3rd pharyngeal arches, 1st pharyngeal groove, maxillary and mandibular components of 1st pharyngeal arch, fourth ventricle of brain, heart prominence, cervical sinus, upper limb bud, mesonephric ridge, lower limb bud, 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

Lateral view

Ventral view

Embryo Virtual Slide

Stage 14 - Lateral View

‎‎Mobile | Desktop | Original

Stage 14 | Embryo Slides

Stage 14 - Ventral View

‎‎Mobile | Desktop | Original

Stage 14 | Embryo Slides

Scanning EM

Dorsolateral view
Cranial end
Cloacal region
Caudal end

Kyoto Collection

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).

Stage 14 Embryo Movie

‎‎Stage 14 Model

Page | Play

Additional Images

Stage 14 Optical Projection Tomography
External ear Stages 14-23 and adult
Stage 14 compare size to Stage 23
7mm embryo described by Mall
Kollmann Fig. 70
Streeter Fig. 13

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

Image Source: Scanning electron micrographs of the Carnegie stages of the early human embryos are reproduced with the permission of Prof Kathy Sulik, from embryos collected by Dr. Vekemans and Tania Attié-Bitach. Images are for educational purposes only and cannot be reproduced electronically or in writing without permission.

Embryonic Development

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.

Cite this page: Hill, M.A. (2024, April 18) Embryology Carnegie stage 14. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/Carnegie_stage_14

What Links Here?

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