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Anteriorlateral path
Somatosensory Pathway
| Question | Answer |
|---|---|
| What occurs first in the anterolateral path | Axons enter the spinal cord and synapse on cells in the dorsal horns |
| What occurs second in the anterolateral path | Most of the spinal cord cells decussate before they ascend |
| What occurs third in the anterolateral path | They ascend in the anteriorlateral portion of the spinal cord after they ascend |
| In this path, there are 3 different anterolateral tracts. What are they? | 1. Spinothalamic tract 2. Spinoretucular tract 3. Spinotectal tract |
| Of the 3 different anterolateral tracts, where does the spinothalamic tract project to? | Projects to the ventral posterior nucleus of the thalamus |
| Of the 3 different anterolateral tracts, where does the spinoretucular tract project to? Where do the reticular cells project to? | -Projects to the retucular formation -Project to the parafoscicular (PFN) and intralaminar (ILN) nuclei of the thalamus |
| In the Spinothalamic and Spinoretucular tracts, the VPN, PFN, and ILN also get _______ info about the contralateral side via the __________ nerve | -pain/temp -trigeminal |
| In the Spinothalamic and Spinoretucular tracts, the ________ cells project to ________ cortex | -thalamic -somatosensory |
| Of the 3 different anterolateral tracts, where does the spinotectal tract project to? Where does the trigeminal nerve also project to? | -Projects to the tectum (colliculi) -Projects to the tectum |