Question

the medical term for lack of voluntary control of muscle movement is ______.
a. atonic
b. myoclonus
c. myasthenia
d. ataxia

Explanation:

• Option a: Atonic refers to lack of muscle tone, not control of movement.
• Option b: Myoclonus is sudden, brief muscle jerks, not lack of voluntary control.
• Option c: Myasthenia is muscle weakness, not specifically about movement control.
• Option d: Ataxia is the medical term for lack of voluntary control of muscle movement, often affecting coordination.

Answer:

d. ataxia