Choose ONE of the following to respond to.  1. Tetrodotoxin…

Choose ONE of the following to respond to.  1. Tetrodotoxin (TTX) is a potentially fatal neurotoxin produced by cone snails, pufferfish, and blue-ringed octopuses. TTX acts by blocking voltage-gated sodium channels, causing them to remain closed. What effect would TTX poisoning have on a neuron, and why would these effects be fatal?   OR   2. Parkinson’s disease is a neurological disorder in which cells in the basal ganglia die off, resulting in impaired motor function. A secondary result of Parkinson’s is that neurons that produce norepinephrine also die off.  What part of the nervous system would be most affected by the loss of norepinephrine, and what would be the effects?