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Neurogenesis - Anatomy & Physiology (view source)
Revision as of 16:48, 26 August 2008
, 16:48, 26 August 2008→Organisation of the Nervous System
***Ganglia of the ''sympathetic'' nervous system are near the '''spinal cord'''.
***Ganglia of the ''sympathetic'' nervous system are near the '''spinal cord'''.
***Ganglia of the ''parasympathetic'' nervous system are near the '''target organ'''.
***Ganglia of the ''parasympathetic'' nervous system are near the '''target organ'''.
==Neural Crest==
*The crest neuroectoderm is the region at the junction of epidermis and neural plate.
*When the neural tube closes, the epidermis is brought into contact with the crest neuroectoderm.
**This contact causes cells of the crest neuroectoderm to undergo an epithelial to mesenchymal transition.
**Cells that undergo this transition break away from the neuroectoderm and are called '''neural crest cells'''.
*The peripheral nervous system (PNS) develops from the neural crest.
*The undifferentiated neural crest cells migrate away from the neural tube along