Three Long Tracts

Question 1

Direction of Corticospinal Tract

Answer 1

Descending

Question 2

Direction of Corticospinal Tract

Answer 2

Descending

Question 3

Corticospinal Tract Function

Answer 3

Motor

Question 4

Location of Corticospinal tract

Answer 4

Ventral lateral (midbrain) moving to ventral paramedian (medulla)

Question 5

Corticospinal Tract: where do the fibers cross to contra lateral side?

Answer 5

Medulla, at the decussation of pyramids

Question 6

Direction of Spinothalamic Tract

Answer 6

Ascending

Question 7

Function of Spinothalamic Tract

Answer 7

Pain and temperature

Question 8

Location of spinal thalamic tract

Answer 8

Dorsal lateral

Question 9

Spinal thalamic: where do fibers cross to contralateral side?

Answer 9

Pain and temperature fiber travel to spinal cord from periphery, where they synapse on first – order neurons, and cross to the contralateral,  side in the spinal cord 

Question 10

Direction of Dorsal columns- Medial Lemniscus

Answer 10

Ascending

Question 11

Function of dorsal columns

Answer 11

Joint position, vibration, discriminative touch

Question 12

Location of dorsal Collumns

Answer 12

Paramedian (medulla) moving to dorsateral (midbrain)

Question 13

Dorsal columns: when do fibers cross to the contralateral side?

Answer 13

Fibers travel to the spinal cord from periphery, where they synapse on first order neurons, travel up spinal cord on the same side, until they cross to the contralateral side in the medulla