Motor Systems Slides

Question 1

cord segments: most white matter is in the

Answer 1

neck

Question 2

cord segments: gray matter is largest in

Answer 2

cervical and lumbar regions

Question 3

cord segments: white matter increases are you go ( )

Answer 3

rostral

Question 4

cord segments: lateral horn is present in ( )

Answer 4

thoracic levels

Question 5

corticospinal pathway contain what 3 pairs of desending tracts?

Answer 5

1) corticobulbar
2) lateral corticospinal
3) anterior corticospinal

Question 6

pathway: provide conscious control over skeletal muscle of eye, jaw, face, neck, and pharynx

Answer 6

corticobulbar

Question 7

pathway: regulate voluntary control of skeletal muscle on the opposite side

Answer 7

lateral corticospinal

Question 8

pathway: regulate voluntary control of skeletal muscle on the same side

Answer 8

anterior corticospinal

Question 9

desending: motor or sensory

Answer 9

motor

Question 10

ascending: motor or sensory

Answer 10

sensory

Question 11

gets you to initiate

Answer 11

basal ganglia

Question 12

2 sources of feedback

Answer 12

1) visual

2) proprioceptive

Question 13

compares motor plan to actual event/controls it to stay on target

Answer 13

cerebellum

Question 14

“rheostat” for movement

Answer 14

basal ganglia

Question 15

how to correct motor error

Answer 15

1) mess with cerebellum directly

2) mess with input