Neuroanatomy Revision Night: Spinal Tracts Flashcards
2 main ascending tracts?
DCML
spinothalamic
if a tract starts with “spino” is it an ascending or descending tract?
usually ascending
where does the first order neuron in DCML end?
medulla
where does the 2nd order neuron in DCML end?
ventral posterolateral nucleus
where does the 3rd order neuron in DCML end?
postcentral gyrus
anything above T6 enters through the fasciculus ___ of the DCML tract
cuneatus
anything above T6 enters through the fasciculus ___ of the DCML tract
gracilis
what order neuron performs the horizontal decussation seen in the spinothalamic tract?
2nd order
all sensory tracts synapse in the thalamus T or F
T
what is the 3rd main ascending tract
spinocerebellar
pyramidal tracts originate from…
precentral gyrus
extrapyramidal tracts originate from..
the brainstem
pyramids are located?
lower medulla
what part of the corticospinal tract decussates segmentally ie NOT AT THE PYRAMIDS?
anterior
corticobulbar tract controls….
eyes
tongue