K12 Limbs: Difference between revisions

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The arms begin to develop before the legs and if you look at the whole embryo the legs always look younger (less developed) than the arms (almost a stage behind, about 2 days difference).
The arms begin to develop before the legs and if you look at the whole embryo the legs always look younger (less developed) than the arms (almost a stage behind, about 2 days difference).


Look below at the series of images and see what changes you can see in the shape, features and position of the arm. Towards the end of this period (9 weeks) the embryo will also begin to move the limbs. So far we have only put the arm images on this page and not the legs.
Look below at the series of images and see what changes you can see in the shape, features and position of the arm. Towards the end of this time (9 weeks) the embryo will also begin to move the limbs. So far we have only put the arm images on this page and not the legs.
 
 
 
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[[Category:K12]]
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Revision as of 09:27, 22 March 2011

Limbs - Arms and Legs

The arms and legs (we call them "limbs") begin as small buds on the sides of the embryo body.

Stage20-23 limbs a.jpg

Human Limb Development during week 8

From week 5 to week 8 of embryo development major changes occur in the shape and structure of the embryo limbs.

The arms begin to develop before the legs and if you look at the whole embryo the legs always look younger (less developed) than the arms (almost a stage behind, about 2 days difference).

Look below at the series of images and see what changes you can see in the shape, features and position of the arm. Towards the end of this time (9 weeks) the embryo will also begin to move the limbs. So far we have only put the arm images on this page and not the legs.


K12 Links: Start Here | Week 1 | Week 2 | Week 3 | Week 4 | Week 5 to 8 | Arms and Legs | Heart | Fetus | Brain Growth | Eyes and Ears | Animal Development Times | Humans and Animal Embryology | Comparative Embryology | Thalidomide



Cite this page: Hill, M.A. (2024, March 28) Embryology K12 Limbs. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/K12_Limbs

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