Central Somatosensory Pathways Flashcards Preview

Jason's Neuro Block > Central Somatosensory Pathways > Flashcards

Flashcards in Central Somatosensory Pathways Deck (18):
1

what are in dorsal columns of spinal cord?

afferent sensory info from periphery

2

Where is upper limb located in dorsal columns versis lower limbs?

lower limbs are more medial
upper limb more lateral

3

3 nerves to get from touch to brain, where does it cross over/decussation?

caudal medulla

4

what other info besides somatosensory during touch?

proprioceptive/cerebellar

5

What is S1 and S2 mean in neuro?

primary somatic sensory cortex
Secondary somatic sensory cortex

6

how many body maps in S1 and S2

S1 - 4
S2 - 2

7

somatosensory cortex distribution even?

Nope, uneven distribution in form of humunculus

8

gracile nucleus has what tracts?

lower limb

9

Cuneate nucleus has what tracts?

upper limb

10

where does touch go after somatosensory cortex?

hippocampus and amygdala for further processing

11

patterns of recognition within sensory cortices example?

rat whiskers have a barrel appearance

12

what happens to somatosensory cortex after finger amputation

the finger that was amputated zone is taken over by adjacent regions

13

somatosensory cortex after repetative behavioural task?

expanded regions in the somatosensory cortex for those stimulated areas

14

Can you get CNS plasticity with erroneous peripheral nerve regen?

Nope.

15

Phantom limbs are what?

after amputation, the patient can still feel the missing limb as though it were a part of them

16

what is the largest dural venous sinus?

superior sagittal sinus

17

falx and tentorium made of what?

dura

18

hindbrain consists of what 3 things?

pons
medulla
cerebellum