Spinal Cord Pathways Flashcards Preview

Medicine > Spinal Cord Pathways > Flashcards

Flashcards in Spinal Cord Pathways Deck (20):
1

pain, temperature, itching, tickling, deep pressure and crude touch travel together in what pathway?

spinothalamic

2

what is meant by "upper" motor neuron?

having to do with the CNS

3

where is the alpha motor neuron located?

ventral gray matter (ventral root)

4

what motor neuron is associated with voluntary pathway?

alpha

5

what is the motor humonculous?

places where voluntary motion comes from in the cerebral cortex

6

what are extrapyramidal symptoms?

older terminology for basal ganglia

7

what is the internal capsule?

motor white matter pathway

8

what is the decussation of pyramid?

where neuronal pathways cross in the medulla

9

what does lateral corticospinal pathway control?

distal, fine motor function

10

what does anterior corticospinal pathway control?

proximal motor function of extremities

11

what does it mean to decussate?

cross over

12

what is the pathway in the basal ganglia?

input into caudate and putamen
output through globus pallidus and substantia nigra

13

what is dysmetria

inability to coordinate movement

14

what senses travel along the dorsal pathway?

proprioception
vibration
light pressure
discriminative touch
two-point discrimination

15

how many neurons does sensory pathway have?

3

16

where does spinothalamic cross?

at level of spinal column
(2nd order neuron)

17

what does VPL mean?

ventroposteriorlateral area of thalamus

18

what information does the gracile fasciculus carry?

input from lower extremities
-standing on the "grass"-medially

19

what information does the cuneate fasciculus carry?

input from upper extremities
-laterally located

20

where does the dorsal pathway cross at?

area of the medulla
-gracile or cuneate nucleus
-where the 1st order nucleus synapses with 2nd order nucleus

Decks in Medicine Class (146):