MODULE 5- ARPIN STUDY GUIDE

Question 1

nociceptors

Answer 1

unspecialized, free nerve endings

Question 2

2 kinds of slowly transmitting afferent fibers

Answer 2

-Aδ lightly myelinated axons (first pain)
*type I
*type II
-C unmyelinated axons, small diameter (second pain)

Question 3

are Aδ myelinated

Answer 3

lightly myelinated

Question 4

are C myelinated

Answer 4

unmyelinated
-small diameter

Question 5

foot/hand central pain pathway

Answer 5

foot/hand ->
DRG ->
dorsal horn of SC ->
VPL ->
S1

Question 6

face central pain pathway

Answer 6

face ->
trigeminal ganglion ->
spinal nucleus ->
VPM ->
S1

Question 7

pain + temperature is ipsilateral/contralateral

Answer 7

contralateral

Question 8

what tract for pain + temperature

Answer 8

anterolateral tract

Question 9

touch + pressure is ipsilateral/contralateral

Answer 9

ipsilateral

Question 10

what tract for touch + pressure

Answer 10

dorsal column medial lemniscal tract

Question 11

what results in pattern of dissociated sensory loss

Answer 11

-contralateral pain + temperature (anterolateral tract)
-ipsilateral touch + pressure (dorsal column medial lemniscal tract)

Question 12

2 aspects of pain experience

Answer 12

-sensory discriminative
-affective motivational

Question 13

what does sensory discriminitive pain include

Answer 13

VPL + VPM of thalamus

Question 14

referred pain

Answer 14

-visceral (internal) pain can be felt as pain from other locations
-can also travel through the dorsal column-mediated lemniscal system

Question 15

sensitivity to pain can be modified by which PERIPHERAL mechanisms

Answer 15

-hyperalgesia
-peripheral sensitization (inflammation)

Question 16

peripheral sensitization refers to

Answer 16

inflammation

Question 17

sensitivity to pain can be modified by which CENTRAL mechanisms

Answer 17

allodynia

Question 18

placebo effect

Answer 18

true physiological effect

Question 19

know gate control theory of pain