somatosensory II

Question 1

fast pain receptor

Answer 1

mechanical and thermal nocioceptors

Question 2

fast pain fiber type

Answer 2

small myelinated

Question 3

fast pain tracts

Answer 3

neospinothalamic

Question 4

fast pain thalamus

Answer 4

lateral VPL

Question 5

fast pain function

Answer 5

sharp localized pain

Question 6

slow pain receptor

Answer 6

polymodal nocioceptors

Question 7

slow pain fiber type

Answer 7

unmyelinated

Question 8

slow pain tracts

Answer 8

paleospinothalamic

spinoreticulothalamic

Question 9

slow pain thalamus

Answer 9

medial thalamus

Question 10

slow pain cortex

Answer 10

frontal and limbic

Question 11

slow pain function

Answer 11

cortical arousal, affect

Question 12

nociception proteases

Answer 12

breakdown kininogen to bradykinin

bradykinin bind to receptors that activate ion channels

Question 13

heat over ___ opens heat sensitive ion channels on nociceptors

Answer 13

43

Question 14

oxygen deprivation-

anaerobic metabolism release

Answer 14

lactic acid

–> high levels of H

Question 15

polymodal

Answer 15

mechanical, thermal, chemical stimuli

Question 16

capsaicin activates

Answer 16

TRPV1 receptor

Question 17

trpv1 channels open at

Answer 17

lower temps

Question 18

aspirin inhibits enzymes for ____ synthesis

Answer 18

prostaglandin

Question 19

what fibers for pain and temp, some touch

Answer 19

A-delta(III)

small, thinly myelinated

Question 20

what fibers for slow pain and temp

Answer 20

C(IV)

Question 21

ascending pathways important for

Answer 21

position of body in space

arousal

Question 22

anterolateral system or spinothalamic pathway

Answer 22

pain temp itch touch

Question 23

pain fibers enter dorsal root enter zone ___

Answer 23

laterally

Question 24

dorsal root entry zone also known as

Answer 24

zone of lissauer

Question 25

second order neurons ascend contralaterally in the

Answer 25

medulla
pons
midbrain

Question 26

second order neurons synapse in

Answer 26

thalamus

Question 27

neospinothalamics synapse in

Answer 27

VP nucleus

Question 28

spinoreticular tract is information

Answer 28

to the reticular nuclei which project to intralaminar nuclei of thalamus
important in arousal

Question 29

spinomesencephalic tract information to

Answer 29

midbrain tectum
-coordinates eye and head movements
periaqueductal gray matter
-pain regulation

Question 30

dorsal column medial lemniscus for

Answer 30

vibration, proprioception, fine touch

Question 31

anteral lateral pathways for

Answer 31

pain, temp, crude touch

Question 32

in spinal cord ALS and DC-ML pathways on what sides

Answer 32

opposite

Question 33

ALS and DCML pathways come together in

Answer 33

caudal medulla

Question 34

with hemisection of spinal cord patient loses

Answer 34

pain from opposite side of body about 2 levels below lesion

touch etc on same side

Question 35

spinomesencephalic tract projects to

Answer 35

superior colliculus orienting to pain stimulus

periaqueductal gray-pain modulation

Question 36

thalamus projects to

Answer 36

primary somatic sensory cortex

Question 37

posterior thalamic nuclei
input
projects to

Answer 37

ALS

insular cortex

Question 38

medial dorsal nucleus
input
projection

Answer 38

ALS

anterior cingulate cortex and orbitofrontal

Question 39

thalamus plays role in

Answer 39

affecttive and motivational aspects of pain and in memory fo painful stimuli

Question 40

cortex for painful stimuli

Answer 40

insular cortex and anterior cingulate

Question 41

cortical projections from layers 5/6 project to

and modulate…

Answer 41

thalamus
brainstem
spinal cord

modulate sensory info thats ascending

Question 42

pain modulation from___ to ___

Answer 42

periaqueductal gray

nucleus raphe magnus

Question 43

neurons in raphe magnus project to

excite..

Answer 43

spinal cord
excite interneurons
-enkephalinergic
-inhibits 1st and 2nd order pain neurons

Question 44

neurons in locus cereleus are

Answer 44

noradrenergic