S3: Anterolateral Pathway Flashcards
protopathic info comes into the spinal cord In ___ diamter dorsal root axons
small
protopathic infor enters spinal cord and travels upwards in ___
Lissaeurs tract or the dorsolateral fascilulus
only goes up or down 2 spinal segments before SYNAPSING IN THE DORSAL HORN
![](https://s3.amazonaws.com/brainscape-prod/system/cm/078/685/957/a_image_thumb.png?1659418276)
after synpasing in the dorsal horn, the second order neuron then ____
crosses in the spinal cord and ascends as the anterolateral tract
![](https://s3.amazonaws.com/brainscape-prod/system/cm/078/686/209/a_image_thumb.png?1659418277)
after traveling up as the antero lateral tract what happens to the axons?
- they synapse at every level in the brainstem, most synapsing in the reticular formation (these can then synapse in the same regions of the thalamus)
- thalamus: vpl, dorsomedial, intralaminar etc
![](https://s3.amazonaws.com/brainscape-prod/system/cm/078/687/032/a_image_thumb.png?1659418277)
from the thalamus, signals then go to the
post central gyrus via the internal capsule
also to more widespread areas related to pain perception and appreciation (anterior cingulate, frontal lobe).
![](https://s3.amazonaws.com/brainscape-prod/system/cm/078/687/111/a_image_thumb.png?1659418277)
signals from the ALS get from the thalamus to the post central gyrus via the
internal cpasule
contralteral loss of proppathic can be seen with X to
ALS -
- anterolateral tract in spinal cord
- ALS synapsing in the brainstem
- VPL, DM, intalaminar in thalamus
- post central gyrus
loss of protopathic sx include
Reduced pain
Reduced sense of warming or cooling skin
Simple touch intact but reduced in sensitivity