Botulinum Toxin (Botox) Injections Are a Popular Cosmetic Treatment Because

Multiple Choice

Botulinum toxin (Botox) injections are a popular cosmetic treatment because they allow an individual to temporarily reduce visible wrinkles in the skin (usually around the face) . What is a probable mechanism of Botox at the neuromuscular junction?

A) Inhibition of muscarinic receptors that cannot then bind to ACh and cause an end-plate potential, causing muscle relaxation.
B) Excitation of ACh vesicles in the pre-synaptic neuron allow for end-plate potentials to be fired and cause muscle tightness due to excess contraction.
C) Inhibition of ACh vesicles in the pre-synaptic neuron prevent an end-plate potential and cause complete muscle relaxation.
D) Excitation of the nicotinic receptors making them extra sensitive to ACh and causing more contractions with less ACh present in the NMJ.