Difference between revisions of "File:Stage22 HPA2L.jpg"

From Embryology
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* Small region from entire cross-section of the [[:Image:Stage22_HPA1L.jpg|stage 22 embryo head]] shown in high power.
 
* Small region from entire cross-section of the [[:Image:Stage22_HPA1L.jpg|stage 22 embryo head]] shown in high power.
  
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{| class="wikitable mw-collapsible mw-collapsed"
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! Detailed Image  
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| [[File:Stage 22 image 217.jpg|800px]]
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===Cortex Development===
 
===Cortex Development===
 
* Ventricular layer (stem cells) proliferate.
 
* Ventricular layer (stem cells) proliferate.

Latest revision as of 12:51, 14 May 2017

Human Embryo Carnegie stage 22

  • Section through the head/brain region of the developing cortex.
  • Small region from entire cross-section of the stage 22 embryo head shown in high power.
Detailed Image  
Stage 22 image 217.jpg

Cortex Development

  • Ventricular layer (stem cells) proliferate.
    • mitosis
  • Differentiating cells migrate away from ventricular layer.
    • migrate along radial glial cells.
  • Migrating cells stop at the region where the cortex will form.
  • Cells are layered from the inside outwards.

Note

  • all layers between ventricular and developing cortex are only developmental structures.
  • Neurons are formed first, glia are formed later.
  • Adult - ventricular layer lines the ventricles and appears to still contain some neural stem cells.


Links: Neural System Development | Stem Cells

File history

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current16:22, 10 August 2009Thumbnail for version as of 16:22, 10 August 2009603 × 399 (82 KB)MarkHill (talk | contribs) Original File name: HUMHPA2L.GIF
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