National Certified Addiction Counselor, Level 2 (NCAC II) Practice Exam Exam

What term refers to impaired or failing voluntary muscle control?

1. Dydysphagia

2. Dysphasia

3. Dyskinesia

4. Dystonia

The correct answer is: Dyskinesia

The term that refers to impaired or failing voluntary muscle control is dyskinesia. This condition encompasses various involuntary muscle movements that can interfere with normal motor control, leading to difficulties such as tremors, spasms, or unwanted movements. Dyskinesia often occurs in conditions like Parkinson's disease or as a side effect of certain medications. In contrast, the other terms have different meanings that do not pertain directly to voluntary muscle control. For example, dyspahgia refers to difficulty swallowing, dysphasia pertains to language or speech difficulties, and dystonia involves sustained muscle contractions and abnormal postures, which can also affect motor control but is more specific to muscle tone rather than general voluntary control.