Which of the following is the shortest-acting competitive neuromuscular blocking agent?
AAtracurium
BRocuronium
CMivacurium
DCisatracurium
How does botulinum toxin affect synaptic transmission?
APrevents ACh release
BInhibits Ca2+ release
CIncreases K+ influx
DBlocks Na+ channels
A 40-year-old man presents with sudden onset of unilateral facial paralysis. He is unable to close his eye or raise his eyebrow. What is the most likely diagnosis?
AMyasthenia gravis
BTrigeminal neuralgia
CBell's palsy
DStroke
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