In contrast to these toxins,strychnine acts postsynaptically,to block glycine from binding to receptors on motor neurons.Would you expect the symptoms of strychnine poisoning to be more similar to those of botulinum or tetanus toxin?
A)botulinum
B)tetanus toxin

Question

Quizplus · Accepted Answer

Since strychnine acts postsynaptically to block glycine from binding to receptors on motor neurons, this suggests an increase in motor neuron excitability. This is similar to tetanus toxin, which also causes increased excitability of motor neurons, leading to muscular spasms and eventually paralysis. Botulinum toxin, on the other hand, blocks the release of acetylcholine from presynaptic neurons, leading to muscle weakness and paralysis. Therefore, the symptoms of strychnine poisoning are more similar to those of tetanus toxin, rather than botulinum toxin.

In Contrast to These Toxins,strychnine Acts Postsynaptically,to Block Glycine from Binding