Spinal Tract

Question 1

Medial lemniscal pathway

Answer 1

Dorsal column

Question 2

Ascending pressure, vibration, fine touch and proprioception

Answer 2

Dorsal column

Question 3

Synapse 1 of Dorsal Column

Answer 3

Ipsilateral nucleus cuneatus or gracilis (medulla)

Question 4

Decussation of Dorsal Column

Answer 4

medulla - ascends c/l in medial lemniscus

Question 5

Synapse 2 of Dorsal Column

Answer 5

VPL of thalamus

Question 6

Ascending Pain and temperature

Answer 6

Lateral Spinothalamic tract

Question 7

Ascending Crude touch and pressure

Answer 7

Anterior Spinothalamic tract

Question 8

Synapse 1 of Spinothalamic tract

Answer 8

I/L gray matter of spinal cord

Question 9

Decussation of spinothalamic tract

Answer 9

Anterior White Commisure –> ascends C/L

Question 10

Synapse 2 of Spinothalamic Tract

Answer 10

VPL (thalamus)

Question 11

Descending Volunary movement of C/L limbs

Answer 11

Ventral and Lateral corticospinal tract

Question 12

Path of ventral and lateral corticospinal tract

Answer 12

(UMN) motor cortex –> through internal capsule –> DECUSSATION AT CAUDAL MEDULLA –> descends C/L –> synapse at ANTERIOR HORN –> LMN –> NMJ

Question 13

Decussation of ventral and lateral corticospinal tract

Answer 13

caudal medulla (pyramidal decussation)

Question 14

Voluntary command from motor cortex –> head and neck

Answer 14

Corticobulbar tract

Question 15

weakness, atrophy fasciculations, hyporeflexia, decreased tone, flaccid paralysis

Answer 15

LMN injury

Question 16

weakness, hyperreflexia, increased tone, babinski, spastic paralysis, clasp knife spasticity

Answer 16

UMN injury

Question 17

Destruction of anterior horns –> flaccid paralysis after being bit by a mosquito

Answer 17

West Nile Virus

Question 18

Destruction of anterior horns –> flaccid paralysis in an infant

Answer 18

Werdnig-Hoffman disease (infantile SMA, AR)

Question 19

Destruction of anterior horns –> flaccid paralysis can be prevented by a vaccine

Answer 19

Poliomyelitis