2012 Group Project 2
--Mark Hill 12:23, 15 August 2012 (EST) This is a better project title.
- Touch, Pain, Hot/Cold, Pressure Reception
History of Discoveries
Central Somatosensory Differentiation
This is just preliminary work and will be edited later:
Dorsal root ganglion (DRG) has sensory neurons that make connections with the periphery and with the CNS.
By stage 23;
- Axons of primary afferent neurons have reached the spinal cord
- outgrowth of DRG has just begun
After reaching the CNS (spinal cord), these axons of these afferent neurons bifurcate and begin to extend into the Primordium of the dorsal funiculus
By Stage 24:
- the afferent axons have projected 1 segment rostral and 1 segment caudal of their point of entry
- the afferents grow within the white matter (periphery of Spinal Cord)
Stage 28 –
- unbranched afferent axonal fibres invade gray matter at the border of Dorsal horn
- axonal fibres extend Rostrally and caudally and start sending fine collateral fibres into the spinal gray matter – the cellular, central region of spinal cord
- afferent fibres have extended into gray matter for 100-200μm
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--Mark Hill 12:22, 15 August 2012 (EST) Please leave the content listed below the line at the bottom of your project page.