lecture 5: motor systems of brain

Question 1

basal ganglia function

Answer 1

coordinates smooth movement
- expression of mood

Question 2

substantia nigra purpose

Answer 2

produces most of the body’s dopamine

Question 3

lesion of upper motor neuron

Answer 3

spastic paralysis - uncontrolled contractions. rigid

Question 4

lesion of lower motor neuron

Answer 4

flacid paralysis - no control of muscles. floppy

Question 5

lesion of dopamine producing cells in substantia nigra

Answer 5

parkinson’s disease. dopamine production reduced. glutamate increases in order to achieve affect. toxic so cells of striatum cells damaged. difficulty in initiating movement.