Which motor speech disorder is typically associated with weak speech muscles?

• A. Apraxia of speech
• B. Dysarthria
• C. Stuttering
• D. Language impairment

Answer: (B)

Dysarthria is characterized by weakness in the muscles responsible for speech production, which leads to various speech difficulties. This weakness can result from neurological conditions that affect the motor control needed for speech, such as stroke, brain injury, or degenerative diseases. Consequently, individuals with dysarthria might exhibit slurred speech, slow speech, or altered speech volume, all stemming from the compromised strength and coordination of their speech muscles.

In contrast, apraxia of speech involves difficulties in planning and coordinating the movements required for speech, rather than muscle weakness itself. Stuttering primarily affects the flow of speech and involves disruptions or repetitions of sounds or syllables but does not inherently involve muscle weakness. Language impairment relates to the ability to understand or express language but is not specifically tied to the motor aspects of speech production.