Neuromuscular-blocking drug
Neuromuscular-blocking drugs, or Neuromuscular blocking agents (NMBAs), block transmission at the neuromuscular junction, causing paralysis of the affected skeletal muscles. This is accomplished via their action on the post-synaptic acetylcholine (Nm) receptors.
Fig.3 A simple illustration of how vecuronium binds to the nicotinic receptor. Its D-ring binds to the receptor at two points and the lipophillic side of the molecule repels cations from flowing through the ion-channel
A neuromuscular junction is a chemical synapse between a motor neuron and a muscle fiber.
Botulinum toxin injected in human face