File:Stage22 HPA2L.jpg: Difference between revisions

Latest revision as of 11:51, 14 May 2017

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

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

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	15:22, 10 August 2009		603 × 399 (82 KB)	MarkHill (talk \| contribs)	Original File name: HUMHPA2L.GIF

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The following 5 pages use this file:

@@ Line 1: / Line 1: @@
-Original File name: HUMHPA2L.GIF
+==Human Embryo Carnegie stage 22==
-Image Source: UNSW Embryology http://embryology.med.unsw.edu.au/wwwhuman/hipower/HumA/a2l.htm
+* Section through the head/brain region of the developing cortex.
+* Small region from entire cross-section of the [[:Image:Stage22_HPA1L.jpg|stage 22 embryo head]] shown in high power.
+{| class="wikitable mw-collapsible mw-collapsed"
+! Detailed Image &nbsp;
+|-
+| [[File:Stage 22 image 217.jpg|800px]]
+|}
+===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]]
 [[Category:Human Embryo]] [[Category:Carnegie Stage]] [[Category:Week 8]] [[Category:Ectoderm]] [[Category:Neural]]