Psychology Wiki
Edit Page

Warning: You are not logged in. Your IP address will be publicly visible if you make any edits. If you log in or create an account, your edits will be attributed to your username, along with other benefits.

The edit can be undone. Please check the comparison below to verify that this is what you want to do, and then save the changes below to finish undoing the edit.

This page supports semantic in-text annotations (e.g. "[[Is specified as::World Heritage Site]]") to build structured and queryable content provided by Semantic MediaWiki. For a comprehensive description on how to use annotations or the #ask parser function, please have a look at the getting started, in-text annotation, or inline queries help pages.

Latest revision Your text
Line 1: Line 1:
 
{{DevPsy}}
 
{{DevPsy}}
In [[embryology]], '''Carnegie stages''' are a standardized system of 23 stages used to provide a unified developmental chronology of the [[vertebrate]] embryo.
+
In [[embryology]], '''Carnegie stages''' are a standardized system of 23 stages used to provide a unified developmental chronology of the [[vertebrate]] [[embryo]].
   
 
The stages are delineated through the development of structures, not by size or the number of days of development, and so the chronology can vary between species, and to a certain extent between embryos. It only covers the first 60 days of development; at that point the term [[embryo]] is usually replaced with the term [[fetus]].
 
The stages are delineated through the development of structures, not by size or the number of days of development, and so the chronology can vary between species, and to a certain extent between embryos. It only covers the first 60 days of development; at that point the term [[embryo]] is usually replaced with the term [[fetus]].
   
It was based on work by Streeter (1942) and O'Rahilly and Müller (1987). The name "Carnegie stages" comes from the Carnegie Institute.
+
It was based on work by Streeter (1942) and O'Rahilly and Müller (1987). The name "Carnegie stages" comes from the [[Carnegie Institute]].
 
While the Carnegie stages provide a universal system for staging and comparing the embryonic development of most vertebrates, other systems are occasionally used for the common [[model organism]]s in [[developmental biology]], such as the Hamburger-Hamilton stages in the chick.
 
 
   
 
While the Carnegie stages provide a universal system for staging and comparing the embryonic development of most vertebrates, other systems are occasionally used for the common [[model organism]]s in [[developmental biology]], such as the [[Hamburger-Hamilton stages]] in the [[chicken|chick]].
   
 
==Stages==
 
==Stages==
Days are approximate, and reflect the days since the last ovulation before pregnancy ("Postovulatory age").
+
Days are approximate, and reflect the days since the last [[ovulation]] before [[pregnancy]] ("Postovulatory age").
   
 
===Stage 1: 1 days===
 
===Stage 1: 1 days===

Please note that all contributions to the Psychology Wiki are considered to be released under the CC-BY-SA

Cancel Editing help (opens in new window)