Parkinson's Trivia 5

Question 1

Which structure in the brain stem, when damaged, produces the blue-black discoloration visible to the naked eye in Parkinson's autopsies?

Accepted Answer

Substantia nigra

Answer

The substantia nigra (Latin for 'black substance') loses its dark pigment as dopaminergic neurons die, which is visible at autopsy in Parkinson's patients.

Question 2

What is the approximate percentage of dopamine neurons that must be lost before Parkinson's motor symptoms typically appear?

Accepted Answer

60–80%

Answer

Motor symptoms of Parkinson's typically do not appear until approximately 60–80% of dopaminergic neurons in the substantia nigra have been lost.

Question 3

Which type of exercise has been specifically studied and shown to potentially slow Parkinson's disease progression?

Accepted Answer

High-intensity aerobic exercise

Answer

High-intensity aerobic exercise has shown the most evidence in clinical trials for potentially neuroprotective effects and slowing Parkinson's progression.

Question 4

What is 'hypomimia' in the context of Parkinson's disease?

Accepted Answer

Decreased facial expression (masked face)

Answer

Hypomimia, or 'masked face,' refers to the reduced facial expressiveness caused by Parkinson's affecting the muscles controlling facial movement.

Question 5

Which organization designates April 11 as World Parkinson's Day, chosen because it is the birthday of James Parkinson?

Accepted Answer

European Parkinson's Disease Association

Answer

The European Parkinson's Disease Association (EPDA) established April 11 as World Parkinson's Day in 1997, honoring James Parkinson's birth date.

Parkinson's Practice Test

Parkinson's Practice Test

Parkinson's Trivia 5