Brain Awareness Week 2012: Difference between revisions
From Embryology
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==The brain end of the tube forms '''3 Vesicles'''== | ==The brain end of the tube forms '''3 Vesicles'''== | ||
At the brain end the tube expands to form three vesicle (sac or bubble) regions. | |||
At the spinal cord end the tube stays narrow, but puts out nerve branches to innervate muscle. | |||
==Fetal brain growth== | ==Fetal brain growth== |
Revision as of 02:22, 9 March 2012
Welcome to Brain Development
width=320px|height=260px|controller=false|autoplay=true</qt> | In today's demonstration we will be looking at how the brain develops from a simple tube into the complex folded structure you will be seeing (and using) today.
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Here is Human Development
Here is how the human nervous system grows
Week 3 | Week 4 to 5 | Week 5 | Week 8 | Week 13 to 21 | Adult Human |
Neural Plate | Neural Tube | Simple Tube | Central Nervous | Fetal Brain | Brain Slices |
Here is a developing mouse nervous system
width=336px|height=415px|controller=true|autoplay=false</qt> |
This movie shows a mouse 11.5 days old. (Mouse development takes 21 days)
Red - brain
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It begins as a Plate
That folds to a Tube
The tube then Closes at each End
Why are these important? |
The brain end of the tube forms 3 Vesicles
At the brain end the tube expands to form three vesicle (sac or bubble) regions.
At the spinal cord end the tube stays narrow, but puts out nerve branches to innervate muscle.
Fetal brain growth
This shows the growth of the brain and the fluid-filled space within the brain (the red bar is 1 cm).
- The brain goes from having a smooth surface to begin to fold or "wrinkle" as the surface area grows.
- The fluid space is filled with cerebrospinal fluid or CSF.