Ascending Tracts

Question 1

Cuneatus- Cord Levels

Answer 1

Only in upper cord levels (input from T5-T6 and up)

Question 2

Gracilis- Associated Rexed Lamina

Answer 2

Bypasses Rexed Lamina

Question 3

Lateral Spinothalamic- Additional Notes

Answer 3

Analgesia (pain loss) and Thermoanesthesia (temperature loss) to the opposite side of the lesion

Question 4

Lateral Spinothalamic- Origin

Answer 4

Spinal Cord

Question 5

Posterior Spinocerebellar- Cord Levels

Answer 5

Found from L3 and above, input from all levels

Question 6

Anterior Spinocerebellar- Associated Rexed Lamina

Answer 6

N/A

Question 7

Cuneatus- Pathway of Terminations

Answer 7

1. Nucleus Cuneatus (in M.O.) 2. VPL of Thalamus 3. Post-Central Gyrus

Question 8

Cuneocerebellar- Cord Levels

Answer 8

N/A

Question 9

Anterior Spinocerebellar- ____ Sided Symptoms

Answer 9

Contralateral tract, contralateral symptoms

Question 10

Lateral Spinothalamic- Pathway of Terminations

Answer 10

1. Spinal Cord (rexed lamina 2, 5) 2. VPL of Thalamus 3. Post-Central Gyrus

Question 11

Cuneocerebellar- Pathway of Terminations

Answer 11

1. Accessory Cuneate Nucleus (M.O.) 2. Ipsilateral Cerebellum

Question 12

Lateral Spinothalamic- ____ Sided Symptoms

Answer 12

Contralateral tract, contralateral symptoms

Question 13

Anterior Spinothalamic- ____ Sided Symptoms

Answer 13

Contralateral tract, contralateral symptoms

Question 14

Posterior Spinocerebellar- ____ sided symptoms

Answer 14

Ipsilateral tract, ipsilateral symptoms

Question 15

Posterior Spinocerebellar- Pathway of Terminations

Answer 15

1. Clark’s Nucleus (know AKA’s) 2. Ipsilateral Cerebellum

Question 16

Cuneatus- ____ Sided Symptoms

Answer 16

Ipsilateral tract, ipsilateral symptoms

Question 17

Anterior Spinocerebellar- Modalities

Answer 17

Gross movements of Lower body (unconscious)

Question 18

Gracilis- Decussation

Answer 18

Secondary neuron crosses via internal arcuate fibers in M.O.

Question 19

Gracilis- Modalities

Answer 19

-Vibratory -2 Pt Touch discrimination -Proprioception

Question 20

Posterior Spinocerebellar- Enters Ipsilateral Cerebellum via…

Answer 20

-Inferior cerebellar peduncle Note -Input from below L3 uses Gracilis tract

Question 21

Lateral Spinothalamic- Modalities

Answer 21

Pain/Temperature

Question 22

Anterior Spinocerebellar- Origin

Answer 22

Lumbo-Sacral grey laminae

Question 23

Cuneocerebellar- Enters Ipsilateral Cerebellum via…

Answer 23

-Inferior cerebellar peduncle

Question 24

Cuneatus- Decussation

Answer 24

Secondary neuron crosses via internal arcuate fibers in M.O.

Question 25

Cuneocerebellar- Associated Rexed Lamina

Answer 25

N/A

Question 26

Posterior Spinocerebellar- Associated Structures

Answer 26

-Rexed lamina 7 -Clark's Nucleus (column)/Nucleus Dorsalis between L3-C8

Question 27

Cuneatus- Origin

Answer 27

Peripheral tissues of upper extremities

Question 28

Lateral Spinothalamic- Associated Rexed Lamina

Answer 28

2, 5

Question 29

Anterior Spinothalamic- Origin

Answer 29

Spinal Cord

Question 30

Cuneatus- Associated Rexed Lamina

Answer 30

Bypasses Rexed Lamina

Question 31

Anterior Spinothalamic- Modalities

Answer 31

Light touch

Question 32

Anterior Spinothalamic- Decussation

Answer 32

Crosses gradually as fibers ascend spinal cord

Question 33

Anterior Spinothalamic- Associated Rexed Lamina

Answer 33

3, 4

Question 34

Posterior Spinocerebellar- Decussation

Answer 34

Does not cross over

Question 35

Anterior Spinocerebellar- Decussation

Answer 35

TWO TIMES, as fibers enter spinal cord, and as they enter cerebellum

Question 36

Anterior Spinocerebellar- Enters Ipsilateral Cerebellum via...

Answer 36

Superior cerebellar peduncle

Question 37

Gracilis and cuneatus- Additional Notes

Answer 37

-Bypass rexed laminae -Only ascending tracts that do not synapse in the cord -Associated with Failed Romberg's test

Question 38

Lateral Spinothalamic- Cord Levels

Answer 38

All, input from all

Question 39

Gracilis- Cord Levels

Answer 39

All cord levels (input from T5-T6 and below only)

Question 40

Anterior Spinothalamic- Cord Levels

Answer 40

All, input from all

Question 41

Cuneocerebellar- Modalities

Answer 41

Fine proprioceptive movement from the shoulder girdle

Question 42

Cuneatus- Modalities

Answer 42

-Vibratory -2 Pt Touch discrimination -Proprioception

Question 43

Cuneocerebellar- Origin

Answer 43

Accessory Cuneate Nucleus (M.O.)

Question 44

Gracilis- Pathway of Terminations

Answer 44

1. Nucleus Gracilis (in M.O.) 2. VPL of Thalamus 3. Post-Central Gyrus

Question 45

Lateral Spinothalamic- Decussation

Answer 45

Crosses abruptly as fibers ascend spinal cord

Question 46

Cuneocerebellar- ____ Sided Symptoms

Answer 46

Ipsilateral

Question 47

Anterior Spinothalamic- Pathway of Terminations

Answer 47

1. Spinal Cord (rexed lamina 3, 4) 2. VPL of Thalamus 3. Post-Central Gyrus

Question 48

Cuneocerebellar- Decussation

Answer 48

Does not cross over

Question 49

Gracilis- Origin

Answer 49

Peripheral tissues of lower extremities

Question 50

Posterior Spinocerebellar- Origin

Answer 50

Found from L3 and above (C8)

Question 51

Anterior Spinocerebellar- Pathway of Terminations

Answer 51

1. Spinal Cord (grey matter) 2. Ipsilateral Cerebellum

Question 52

Gracilis- ____ Sided Symptoms

Answer 52

Ipsilateral tract, ipsilateral symptoms

Question 53

Posterior Spinocerebellar- Modalities

Answer 53

Fine Motor Movement proprioception of lower body (unconscious)

Question 54

Anterior Spinocerebellar- Cord Levels

Answer 54

All, input many input from lower body