Anatomy - CIS

Question 1

unilateral lesion of fasciculus gracilis

Answer 1

ipsilateral loss of proprioception

Question 2

unilateral lesion of fasciculus cuneatus

Answer 2

ipsilateral loss of proprioception

Question 3

destruction of lateral CST

Answer 3

ipsilateral spastic paralysis, hyperreflexia, hypertonia, Babinski, clonus, disuse atrophy

Question 4

unilateral lesion of lateral spinothalamic tract

Answer 4

contralateral loss of pain and temp two levels below lesion

Question 5

transection of lateral reticulospinal tract

Answer 5

unable to void bladder, spinal shock

Question 6

destruction of anterior white commissure

Answer 6

bilateral loss of pain and temp to upper extremities (cape like)

Question 7

lesion to anterior horn

Answer 7

ipsilateral flaccid paralysis, arrefelxia, atonia, atrophy, fasciculations

Question 8

dorsal root lesion

Answer 8

ipsilateral sensory dermatomal anesthesia, possible ipsilateral diminished muscle tone/reflex

Question 9

lesion to lateral funiculus of white matter of spinal cord

Answer 9

ipsilateral UMN paralysis/paresis below level of lesion (from hitting lateral CST)

Question 10

lesion to anterior funiculus of white matter of spinal cord

Answer 10

• contralateral loss of pain and temp two levels below lesion (lateral ALS)
• bilateral loss of pain/temp (anterior white commissure)
• ipsilateral lower motor paralysis at level of lesion (anterior horn)

Question 11

loss of proprioception and 2 point discrimination in the L3/S4 dermatome indicates what

Answer 11

lesion to fasciculus gracilus

Question 12

clonus, positive babinski sign, hypertonia, 4+ reflexes, and paralysis to one of the lower extremities indicates what

Answer 12

lesion to the ipsilateral lateral corticospinal tract

Question 13

loss of pain and temperature sensation to the L3/S4 dermatome on the left indicates what

Answer 13

lesion to the right lateral spinothalamic tract

Question 14

bilateral pain and temperature loss C5-C6 indicates what

Answer 14

syringomyelia or central cord syndrome

Question 15

pt has no reflexes, atonia, and atrophy to bilateral upper extremities and 4+ reflexes, hypertonia, and paralysis to bilateral lower extremities, what does this indicate

Answer 15

LMN paralysis to the upper extremities and UMN paralysis to the lower extremities

Question 16

loss of all pain and temp sensations below L1 bilaterally, loss of proprioception bilaterally below L1, normal upper extremities motor-wise, paralysis of lower extremities, what does this indicate

Answer 16

spinal cord injury causing spinal shock

Question 17

loss of pain and temp to L4-S5 on the left, loss of proprioception and 2 point tactile discrimination to the right, normal UE motor senses, normal LLE, RLE shows 4+ reflexes, hypertonia, paralysis, and Babinski, what does this indicate

Answer 17

Brown Sequard Syndrome