Spinal Cord Tracts

Question 1

Fasciculus cuneatus (post or dorsal column)

Answer 1

sensory tract for trunk, neck, and UE proprioception, vibration, 2 pt discrimination, and graphesthesia

Question 2

fascuculus gracilis (post or dorsal column)

Answer 2

sensory tract for trunka nd LE proprioception, 2 pt discrimination and graphesthesia

Question 3

Spinocerebellar tract ventral

Answer 3

sensory tract that ascends to cerebellum, some fibers cross with subsequent recrossing
ipsilateral subconscious proprioception, ms tension, joint sense, posture of trunk, UE, and LE

Question 4

Spino-olivary tract

Answer 4

ascends to cerebellum and relays info from cutaneous and proprioceptive organs

Question 5

Spinoreticular tract

Answer 5

afferent pathway for reticular formation that influences levels of consciousness

Question 6

spinotectal tract

Answer 6

sensory, afferent info for spinovisual reflexes and assists with mvt of eyes and head towards stimulus

Question 7

spinothalamic tract anterior

Answer 7

sensory tract for light touch and pressure

Question 8

spinothalamic tract lateral

Answer 8

sensory tract for pain and temperature sensation

Question 9

corticospinal tract anterior

Answer 9

pyramidal motor tract responsible for ipsilateral voluntary, discrete, and skilled mvts

Question 10

corticospinal tract lateral

Answer 10

pyramidal motor tract responsible for contralateral voluntary fine movement
Damage: positive babinski, absent ab and cremasteric reflex, loss of fine or skilled voluntary mvt

Question 11

reticulospinal tract

Answer 11

extrapyramidal motor tract, facilitation or inhibition of voluntary and reflex activity through influence on alpha and gamma motor neurons

Question 12

rubrospinal tract

Answer 12

extrapyramidal motoor tract responaible for motor input of gross postural tone, facilitation activity of flexor muscles, inhibiting activity of extensor muscles

Question 13

tectospinal tract

Answer 13

extrapyramidal motor tract responsible for contralateral postural muscle tone assoc with auditory/visual stimuli

Question 14

vestibulospinal tract

Answer 14

etrapyramidal motor tract responsible for ipsilateral gross postural adjustments subsequent to head movements; facilitating activity of extensor muscles and inhibiting activity of flexor muscles
Damage: significant paralysis, hypertonicity, exaggerated DTR, clasp knife reaction