Tracts

Question 1

Where does UMN travel in corticospinal tract?

Answer 1

Motor cortex to anterior grey horn

Question 2

Where does UMN decussate in corticospinal tract?

Answer 2

Medulla

Question 3

Where does LMN terminate in corticospinal tract?

Answer 3

Anterior grey horn

Question 4

Is corticospinal tract contralateral or ipsilateral?

Answer 4

Ipsilateral

Question 5

Cause of LMN lesion?

Answer 5

Damage to spinal nerve, nerve root or nerve plexus

Question 6

4 signs of LMN lesion?

Answer 6

Fasciculations
Muscle wasting
Decreased tone
Decreased reflexes

Question 7

Cause of UMN lesion?

Answer 7

Damage to neural pathway above anterior horn of spinal cord/ motor nuclei of cranial nerves

Question 8

4 signs of UMN lesion?

Answer 8

Increased tone
Increased reflexes
No marked muscle wasting
No fasciculations

Question 9

What modalities does spinothalamic tract carry?

Answer 9

Sensory modalities of pain, temp, crude touch and pressure

Question 10

Is spinothalamic tract contralateral or ipsilateral?

Answer 10

Contralateral

Question 11

Where does spinothalamic tract decussate?

Answer 11

Spinal level (i.e. fibres go to different side, sensory loss on opposite side)

Question 12

What modalities does dorsal column tract carry?

Answer 12

Sensory of fine touch, proprioception and vibration

Question 13

Is dorsal column contralateral or ipsilateral?

Answer 13

Ipsilateral

Question 14

Where does dorsal column decussate?

Answer 14

Medulla