Anterior spinothalamic tract Flashcards
1
Q
Function
A
Crude touch and pressure (protopathic)
2
Q
Receptors and afferent
A
Meissner corpuscle (tactile) + receptors of hair follicles
3
Q
1st order neuron
A
DRG - axons spilt in white matter of spinal cord: ascending + descending branches travel in dorsolateral tract of Lissauer
4
Q
2nd order neuron
A
Posterior horn + Substantia Gelatinosa of Rolando cells
5
Q
Decussation level
A
Axons of 2nd order neuron cross in anterior white commissure within several spinal segments –> ascend in the anterolateral funiculus on the opposite (contralateral) side
6
Q
3rd order neuron
A
VPL
7
Q
Final destination
A
Primary somatosensory cortex (Postcentral gyrus)
