Botulism toxin disrupts motor control by
A) blocking the release of acetylcholine by motor neurons.
B) causing demyelination of motor neurons.
C) blocking inhibitory signals to motor neurons.
D) killing motor neurons.
E) blocking acetylcholine receptors on muscle cells.

Question

Quizplus · Accepted Answer

Botulism toxin blocks the release of acetylcholine by motor neurons, which impairs motor control. Acetylcholine is necessary for the activation of muscle cells, so when it cannot be released, muscle movements are inhibited.

Botulism Toxin Disrupts Motor Control by