Week 2

Question 1

corticospinal tract responsible for?

Answer 1

voluntary movement

Question 2

Function of interneurons?

Answer 2

inhibits the antagonist (when one thing is activated)

Question 3

LMN or UMN? hypoflexia

Answer 3

LMN

Question 4

Other LMN symptoms?

Answer 4

weakness, fasciculations, hypotonia

Question 5

Supplementary motor area responsible for?

Answer 5

action selection, learned movement

Question 6

Anterior cingulate motor cortex responsible for?

Answer 6

behavioral motor control

Question 7

If corticospinal tract is excitatory, what is the inhibitory counterpart?

Answer 7

cortico-reticulospinal trat

Question 8

interruptions in corticospinal tract results in what symptoms?

Answer 8

negative symptoms-weakness, loss of dexterity, inability to increase force

Question 9

Corticomedullary reticulospinal tract interruption results in…

Answer 9

hyperreflexia, spasticity

Question 10

LMN cell bodies located

Answer 10

in anterior horn of spinal cord

Question 11

corticospinal tract crosses where?

Answer 11

medulla pyramids

Question 12

Execution of movement occurs where?

Answer 12

Precentral gyrus (M1)

Question 13

visually guided reching and grasing occurs where?

Answer 13

premotor cortex

Question 14

Motor learning and programming occurs where?

Answer 14

SMA (Supplementary motor area)

Question 15

Motivation related motor drive occurs where?

Answer 15

anterior cingulate cortex

Question 16

joins midbrain to cerebellum for output

Answer 16

superior cerebellar peduncle

Question 17

joins medulla to cerebellum for input

Answer 17

inferior cerebellar peduncle

Question 18

what does middle cerebllar peduncle join?

Answer 18

pons to cerebellum for input

Question 19

describe the corticopontocerebellar pathway

Answer 19

1st order neuron from cerebral cortex
synpases with 2nd neuron in pontine nuclei
crosses midline to contralateral cerebellar hemisphere

Question 20

Spinocerebellar pathway…describe it

Answer 20

cerebellum recieves input from ipsilateral spinal cord via ICP projecting from medulla

provides feedback for locomotion

Question 21

pathway of deep cerebelli nuclei (dentate) as it travels from cerebellum to motor cortex

Answer 21

cerebellum, SCP, crosses midline synpases in ventral lateral nucleus in thalamus, motor/premotor cortex