Ascending pathways flashcards

Question 1

other name for lateral spinothalamic tract?

Answer 1

neospinothalamic tract

Question 2

What does lateral spinothalamic/neospinothalamic tract do?

Answer 2

epicritic pain and temp
(nociceptors, thermoceptors)

Question 3

What type of fibers associated wtih lateral spinothalamic/neospinothalamic tract?

Answer 3

A delta fibers

Question 4

Where does lateral spinothalamic tract / neospinothalamic tract end?

Answer 4

post central gyrus

Question 5

2nd name for anterior spinothalamic tract?

Answer 5

paleospinothalamic tract

Question 6

what does ant. spinothalamic tract / paleospinothalamic tract do?

Answer 6

crude touch (pressure receptorts) and protopathic pain (nociceptors)

Question 7

What types of fibers associated with ant. spinothalamic tract/paleospinothalamic tract?

Answer 7

C fibers

Question 8

What makes ant. spinothalmaic tract different from lateral spino thalamic tract?

Answer 8

Most fibers decussate in ant. white commisure

fibers from ant. spinothalamic tract: some go to reticular formation (spinoreticular fibers) and then diffuse thalamic nuclei where as some fibers go to periaquaductal gray (spinotectal fibers)

Question 9

Which pathways pass through the VPL?

Answer 9

lateral spinothalamic tract
ant spinothalamic tract

arachispinothalamic tract

dorsal white column pathway

Question 10

Where does ant. spinothalamic tract end?

Answer 10

post central gyrus
gyrus cynguli
insular lobe

Question 11

Pathways that pass through VPM?

Answer 11

Trigeminothalamic tract

Question 12

Function of trigeminothalamic tract?

Answer 12

epicritic pain and temp of the face

Question 13

What kinds of fibers are associated with trigeminothalamic tract?

Answer 13

A delta and C fibers

Question 14

Where does trigeminothalamic tract end?

Answer 14

post central gyrus

Question 15

2nd name for arachispinothalamic tract?

Answer 15

propriospinal tract

Question 16

what does arachispinothalamic tract / propriospinal tract do?

Answer 16

protopathic pain and crude touch

Same as ant. spinothalamic tract

Question 17

What makes arachispinothalamic tract different from lateral and anterior spinthalamic tracts?

Answer 17

some fibers cross and some don’t in propriospinal tract

Then it goes to VPL, but also to reticular formation, periaqeuductal gray, hypothalamus

Question 18

Where does arachispinothalamic tract end?

Answer 18

post central gyrus

Question 19

Where does arachispinothalamic tract deucussate?

Answer 19

propriospinal tract

Question 20

Does trigeminothalamic tract deucssate?

Answer 20

no

Question 21

where to lateral and anterior spinothalamic tracts decussate?

Answer 21

ant. white commissure

Question 22

What kinds of fibers associated with dorsal white column pathway?

Answer 22

A beta fibers

Question 23

Where is fassiculus cuneatus?

Answer 23

T4-T8

Question 24

where does dorsal white column pathway ducussate?

Answer 24

internal arccuate fibers

Question 25

What receptors start both post and ant spinocerebellar tracts?

Answer 25

peripheral tactile and proprioceptive fibers

Question 26

what kind of fibers are associated with both ant and post cerebellar pathways and dorsal white column pathway?

Answer 26

A beta fibers

Question 27

Does post spinocerebellar tract cross?

Answer 27

no

Question 28

does ant spinocerebellar tract cross?

Answer 28

yes, twice in ant spinocerebellar tract and in sup cerebellar peduncle

Question 29

what cerebellar peduncle does post spinocerebellar pathway pass through?

Answer 29

inf cerebellar peduncle

Question 30

what cerebellar peduncle does ant spinocerebellar pathway pass through?

Answer 30

sup cerebellar peduncle

Question 31

where does both spinocerebellar pathways end?

Answer 31

cerebellar cortex

Question 32

Where does cerebello thalamic cortico pathway cross?

Answer 32

sup cerebellar peducnle

Question 33

where does cortico-ponto cerebellar pathway cross?

Answer 33

pontine nuclei

Question 34

which two pathways are basically inverse of eachother?

Answer 34

cerebellothalamiccortico pathway and cortiocopontocerebellar pathway