SCI Intro - review of tracts

Question 1

where is gray matter highest in the spinal cord

Answer 1

cervical and lumbosacral regions

Question 2

what direction does white matter increase

Answer 2

caudal to cranial

Question 3

what two arteries supply the spinal cord

Answer 3

anterior spinal artery
posterior spinal artery

Question 4

what is the region of variability in the blood supply to the spinal cord

Answer 4

T4-8

Question 5

medial lemniscus pathway

Answer 5

proprioception, vibration, light and discriminative touch

Question 6

anterolateral pathways

Answer 6

pain, temp, crude touch

Question 7

spinocerebellar pathway

Answer 7

unconscious proprioception from trunk and limbs

Question 8

lateral corticospinal

Answer 8

volitional movement of contralateral limbs

Question 9

anterior corticospinal

Answer 9

control of bilateral axial and girdle muscles

Question 10

rubrospinal tract

Answer 10

LCST with descending drive for movement of contralateral limbs - flexors

Question 11

vestibulospinal tract

Answer 11

medial: bilateral to cervical to control positioning of head and neck

lateral: ipsi truncal control and balance

Question 12

reticulospinal tract

Answer 12

aids in posture and gait related movements

Question 13

tectospinal tract

Answer 13

assists with coordination of head and eye movements