Spinal Cord Tracts and Functions

Question 1

E

Answer 1

Lamina IX

(Motor neurons & interneurons)

Question 2

L

Answer 2

Medial Longitudinal Fasciculus

Question 3

C

Answer 3

Lamina VII: Clarke’s nucleus & Intermediolateral column

(Mostly autonomic processing)

Question 4

E

Answer 4

Lateral Corticospinal Tract

Question 5

C

Answer 5

Dorsolateral Tract of Lissauer

Question 6

Anterior Corticospinal Tract

Answer 6

Uncrossed minority of pyramidal tract (mostly bilateral axial muscles)

Question 7

Posterior Spinocerebellar Tract

Answer 7

Proprioception from Clarke’s nucleus

Question 8

A

Answer 8

Gracile Tract

Question 9

Lateral Corticospinal Tract

Answer 9

Primary descending motor control

Question 10

D

Answer 10

Lamina VIII

(Motor neurons & interneurons)

Question 11

K

Answer 11

Anterior Corticospinal Tract

Question 12

Anterior Spinocerebellar Tract

Answer 12

Crossed proprioceptive and processed information. Goes to cerebellum through the superior cerebellar peduncle

Question 13

Medial Reticulospinal Fibers

Answer 13

Pain modulation, visceromotor control, regulation of muscle tone

Question 14

Lateral Vestibulospinal Fibers

Answer 14

Mediates balance and posture

Question 15

A

Answer 15

Lamina II: Substantia gelantinosa

(Receives sensory inputs)

Question 16

H

Answer 16

Spinothalamic Tract

Question 17

J

Answer 17

Lateral Vestibulospinal Fibers

Question 18

Dorsolateral Tract of Lissauer

Answer 18

Pain up/down a few segments

Question 19

Cuneate Tract

Answer 19

Tactile from upper half of body

Question 20

I

Answer 20

Medial Reticulospinal Fibers

Question 21

B

Answer 21

Cuneate Tract

Question 22

Gracile Tract

Answer 22

Tactile from lower half of body

Question 23

Spinothalamic Tract

Answer 23

Pain, coarse touch, temp

Question 24

B

Answer 24

Laminae III & IV: Nucleus proprius

(Receives sensory inputs)

Question 25

MLF

Answer 25

Upper axial and head position

Question 26

Receives propioceptive input, primarily from the leg

Answer 26

Clarke's Nucleus

Question 27

Contains sympathetic preganglionic neurons

Answer 27

Intermediolateral Cell Column (Lateral Horn)