Final answer:
Benzylisoquinoliniums are a type of non-depolarizing neuromuscular blocker, with atracurium and cisatracurium being specific examples. Muscarinic agonists serve as antidotes to atropine poisoning, and avermectins are drugs that inhibit helminthic neuronal transmission.
Step-by-step explanation:
The question pertains to the classification of benzylisoquinoliniums, which are a type of neuromuscular blocking drug (NMBD), specifically non-depolarizing neuromuscular blockers (NDMBR). The correct answer to which NDMBRs are benzylisoquinoliniums is c) Atracurium and cisatracurium. These drugs work by blocking the action of acetylcholine at the neuromuscular junction, leading to muscle relaxation and paralysis, which is particularly useful during surgical procedures.