Final Flashcards
Hypertonia the pathology is in the _____
alpha motor neuron
Brodman’s area 4
M1
Brodman’s area 6
PMA
Brodman’s area 44 & 45
Broca’s
Damage to any of the ______ causes more complex motor deficits than damage to M1 alone
premotor areas
dorsal Premotor cortex projects largely to ____
proximal muscles
ventral premotor cortex projects largely to ____
hand and digit muscles
dorsal pmc cells fire between
cue and action
ventral pmc cells fire
for specific hand movements whether watching or performing
sma important for
sequential movements
stimulation of sma provokes
bilateral movements
4 functions of basal ganglia
1 preparation for movement
2 initiation of movement
3 regulate stereotypic movement
4 learning of new motor tasks
(BG has no direct connection to LMN, adjust activity via connections to thalamus)
5 nuclei of BG and roles
caudate (input) putamen (input) globus pallidus (output) (internus & externus) substantia nigra (regulate output) subthalamic nucleus (regulate output)
Striatum =
caudate nucleus & putamen — two main input nuclei of BG
lentiform nucleus =
globus pallidus & putamen