Foundations Practical - Week 1 to 8: Difference between revisions

From Embryology
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[[File:Stage13 surface bulges.jpg|left]]
[[File:Stage13 surface bulges.jpg|left]]
Surface of the Stage 13 Embryo showing surface features reflecting surface and internal development. [[:File:Stage13_sem1.jpg|Carnegie stage 13]]
Surface of the Stage 13 Embryo showing surface features reflecting surface and internal development. [[:File:Stage13_sem1.jpg|Carnegie stage 13]]





Revision as of 21:33, 4 April 2010

The Embryonic Period

Development of Organs and Tissues

You have now been through the earliest stages of embryonic development.

From the original simple trilaminar embryo all the organs and tissues will now begin to develop, details of these processes require more time than we currently have available.

What we will now look at are the changes in the external embryo appearnace during this period.

Key features to note are:

  • changes in overall size (CRL)
  • surface bulges that reflect organ development
  • development of the upper and lower limbs
  • development of the head

This page is about getting an overview of the external changes that occur during the embryonic period. In order to observe and understand the internal changes occuring in organ development is beyond the scope of this current practical.

Changes in Overall Size

In the first 8 weeks the embryo grows from 0.1 mm to about 3 cm in length.

5cm ruler.jpg Actual Size

Stage1 size with ruler.jpg Enlarged Size

Stage13 crown rump length.jpg During this time the embryo size is also measured from "crown" to "rump" or the Crown Rump Length (CRL).

Surface Bulges Reflect Organ Development

Stage13 surface bulges.jpg

Surface of the Stage 13 Embryo showing surface features reflecting surface and internal development. Carnegie stage 13






Links: Embryonic Development | Carnegie stage 13



Foundsmall.jpg

Foundations Practical: Introduction | Week 1 and 2 | Week 3 and 4 | Week 1 to 8 | Week 9 to 36 | Neonatal | Critical Periods | Additional Resources | Quiz


Glossary: A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | Numbers


Cite this page: Hill, M.A. (2024, March 28) Embryology Foundations Practical - Week 1 to 8. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/Foundations_Practical_-_Week_1_to_8

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© Dr Mark Hill 2024, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G