Asked by Carlos Sanchez on May 08, 2024
Verified
Degeneration of the neurons in which of the following structures leads to the muscle tremors associated with Parkinson disease?
A) Cerebral cortex
B) Tegmentum
C) Pons
D) Substantia nigra
E) Inferior colliculi
Substantia Nigra
A region of the midbrain that plays an important role in movement and reward, known for its dark color due to high levels of melanin in dopaminergic neurons.
Parkinson Disease
A degenerative disorder of the central nervous system that mainly affects the motor system, leading to tremors, stiffness, and slow movement.
Muscle Tremors
Involuntary, rhythmic muscle contractions leading to shaking movements in one or more parts of the body.
- Recognize the positions and functions of basal nuclei and comprehend their importance in wellness and illness.
Verified Answer
MV
Martina VastolaMay 13, 2024
Final Answer :
D
Explanation :
The degeneration of neurons in the substantia nigra, a part of the brain involved in movement control, leads to the muscle tremors associated with Parkinson's disease. This is because the substantia nigra is crucial for producing dopamine, a neurotransmitter that plays a key role in regulating movement.
Learning Objectives
- Recognize the positions and functions of basal nuclei and comprehend their importance in wellness and illness.