section 4 part 3

Question 1

what type of sensory info does the dorsal column carry?

Answer 1

epicritic

Question 2

what is another name for the dorsal column tract?

Answer 2

medial lemniscal system

Question 3

where does axons from the anterolateral system cross?

Answer 3

in the anterior white commissure

Question 4

what 3 tracts make up the anterolateral system?

Answer 4

• spinoreticular
• spinotectal
• spinothalamic

Question 5

does the anterolateral system travel contra or ipsilateral?

Answer 5

contralateral

Question 6

does the dorsal column system travel contra or ipsilateral?

Answer 6

ipsilateral

Question 7

what does the term “dissociated sensory loss” mean?

Answer 7

pain & temp loss on one side of the body and fine discrimination abilities (epicritic) loss on the other side

Question 8

which tract does this sentence describe?

“regulates movement & does NOT normally contribute to our conscious perception of limb position”

Answer 8

spinocerebellar

Question 9

what structure does the dorsal cerebellar tract travel through to get to the cerebellum?

Answer 9

the inferior puduncle

Question 10

where do axons from the cunate fasiculus terminate in?

Answer 10

in the medulla on the accessory cuneate nucleus

Question 11

how does the cuneocerebellar tract (axons from the cuneate fasiculus) get to the cerebellum?

Answer 11

via the inferior puduncle

Question 12

how do the axons of the anterior spinocerebellar tract enter the cerebellum?

Answer 12

via the superior puduncle

Question 13

list the symptoms associated with a cerebellar lesion

Answer 13

muscle incoordination
ataxia
intentional tremor on SAME side of body
equilibrium & balance problems

Question 14

which pyramidal tract does motor control of distal muscles?

Answer 14

lateral corticospinal tract

Question 15

which pyramidal tract does motor control of proximal & axial limb musculature?

Answer 15

the ventral/anterior corticospinal tract

Question 16

which brainstem tract does distal motor control?

Answer 16

rubrospinal tract

Question 17

which brainstem tract does predominantly proximal motor control?

Answer 17

the medial brainstem pathways

Question 18

what 3 tracts make up the medial brainstem pathway

Answer 18

• vesibularspinal
• tectospinal
• reticulospinal

Question 19

what type of neurons does the hypothalamo-reticulospinal pathway consist of?

Answer 19

preganglionic sympathetic neurons

Question 20

at what spinal levels does the hypothalamo-reticulospinal exist?

Answer 20

C8-L3

Question 21

damage in what areas and to which tract results in Horners?

Answer 21

the hypothalamo-reticulospinal tract anywhere between the hypothalamus and T1

Question 22

which spinal root mediates arm abduction, flexion & rotation at the shoulder?

Answer 22

C5

Question 23

which 2 spinal roots mediates flexion at the elbow and the biceps reflex?

Answer 23

C5 and C6

Question 24

which spinal root mediates wrist extension?

Answer 24

C6

Question 25

which spinal root mediates elbow extension and triceps reflex?

Answer 25

C7

Question 26

which spinal root mediates leg extension at the knee & the patellar tendon reflex?

Answer 26

L4

Question 27

which spinal root mediates dorsiflexion at the ankle? tibialis anterior, extensor digitorum

Answer 27

L5

Question 28

which spinal root mediates plantar flexion at the ankle and the achilles tendon reflex?
plantar flexion- gastroscnemius, soelus, plantaris

Answer 28

S1

Question 29

which spinal root is the culprit in Erb’s palsy?

Answer 29

C5

Question 30

which spinal root is responsible for flexion of the digits?

Answer 30

C8

Question 31

which spinal root is responsible for abd and add of the digits?
interossei & lumbrical muscles

Answer 31

T1

Question 32

which 2 spinal roots does hip flexion?

Answer 32

L1 and L2

Question 33

which 2 spinal roots do extension of the knee (quad) and add of the hip?

Answer 33

L2 and L3

Question 34

which spinal root is responsible for inversion of the foot?

Answer 34

L4

Question 35

which spinal root is responsible for hip ABD (glut med & min)?

Answer 35

L5

Question 36

which spinal root does knee flexion (hamstrings) and foot eversion (fibularis)?

Answer 36

S1