K12 Week 2: Difference between revisions
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| This movie shows | | This movie shows implantation that occurs during week 2 of human development. | ||
The uterus wall is shown by the white cells (left). | The uterus wall is shown by the white cells (left). | ||
By the end of the second week the embryo is completely within the mother's uterus wall. | |||
| <qt>file=Week2_001.mov|width=250px|height=240px|controller=true|autoplay=false</qt> | | <qt>file=Week2_001.mov|width=250px|height=240px|controller=true|autoplay=false</qt> |
Revision as of 21:00, 22 March 2011
Week 2
In the second week of development the dividing zygote forms a solid ball of cells and is now called a blastocyst.
width=500px|height=450px|controller=true|autoplay=false</qt> |
This movie shows human development between day 3 and day 6 after fertilization.
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- The cells on the surface of the ball will not form part of the embryo and will go on to make the placenta and membranes that surround the embryo.
- The cells on the inside form a small clump beside a fluid filled space. This small clump of cells (embryoblast) will form all the parts of the embryo.
This movie shows implantation that occurs during week 2 of human development.
The uterus wall is shown by the white cells (left). By the end of the second week the embryo is completely within the mother's uterus wall. |
width=250px|height=240px|controller=true|autoplay=false</qt> |
Question: You start as a single cell, how many cells are you now?
Words Used
blastocyst - the name given to all the new cells formed from the first cell (the zygote).
implanting - this means to burrow into the uterus wall.
Cite this page: Hill, M.A. (2024, April 19) Embryology K12 Week 2. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/K12_Week_2
- © Dr Mark Hill 2024, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G