Sensory II and III

Question 1

nociception v. pain

Answer 1

nociception is the reception of harmful sensory info

pain is subjective perception of discomfort

Question 2

nociception is conveyed via

Answer 2

anterolateral systme

Question 3

indirect nociceptive pathway

Answer 3

spinal cord -> reticular formation -> thalamus -> hypothalamus and limbic cortex

Question 4

direct nociceptive pathway

Answer 4

spinal cord -> thalamus -> somatosensory cortex

Question 5

consciously aware and locate the pain

Answer 5

neospinothalamic pathway

Question 6

terminates in the superior colliculus whichis involved in the reflex turning of the head, and upper body toward a noxious stimulus

Answer 6

spinotectal tract

Question 7

a unilateral lesion affecting any part of the first order lesion will result in…

Answer 7

isilateral loss of pain and temperature sensation in the area innervated by that peripheral terminal

Question 8

a unilateral lesion of the spinothalamic tract (crossed) will result in …

Answer 8

loss of pain and temperature sensation on the contralateral side of body, two or more segments below the level of lesion

Question 9

where is tractotomy preformed?

Answer 9

contralateral to the side of pain

4 levels above the highest dermatomal level of pain sensation

Question 10

convergence projection therory

Answer 10

visceral pain projection occurs because the nerve converge to synapse with the same interneurons of second order neurons

Question 11

what is syringomyelia

Answer 11

central cavitation of the spinal cord

loss of pain and temperature sensation over teh shouldera nd Ul due to damage to anteriro white comissure relaying pain and temperature