Botulinum Toxin Impairs Muscle Contraction by Acting on Proteins That

question 144

Multiple Choice

Botulinum toxin impairs muscle contraction by acting on proteins that anchor vesicles in the presynaptic membrane.The toxin has medical uses.Given its effects at the neuromuscular junction, botulinum could be used to treat all of the following except

• A) eyelid twitches.
• B) jaw clenching.
• C) facial tics.
• D) flaccid arm and leg muscles.
• E) muscle spasms of cerebral palsy.

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