Chapter 7.3: Movement Disorders

Question 1

Deterioration of which axon leads to Parkinson’s disease?

Answer 1

Axons from the substantia nigra to the striatum

Question 2

People with Parkinson’s disease show the greatest impairment with which type of movement?

Answer 2

Spontaneous voluntary movements

Question 3

Which of these chemicals damages the brain in a way that resembles Parkinson’s disease?

Answer 3

MPTP

Question 4

In what way let L-dopa treatment for Parkinson’s disease unusual?

Answer 4

It was based on a theory instead of trial and error

Question 5

What is the most common age of onset for Huntington’s disease?

Answer 5

Middle age (30 to 50)

Question 6

Why does damage to the basal ganglia lead to involuntary movements in Huntington’s disease?

Answer 6

Basal ganglia damage reduce inhibition of he thalamus

Question 7

An examination of C-A-G repeats on one gene enables physicians to predict who will develop Huntington’s disease. What else does it help them predict?

Answer 7

The age of onset of symptoms