Tetrodotoxin is a deadly poison because it blocks:
A)Sodium ion channels
B)Potassium ion channels
C)TDT channels
D)Chloride ion channels

Question

Quizplus · Accepted Answer

Tetrodotoxin works by blocking voltage-gated sodium ion channels, which are necessary for the firing of action potentials in neurons and muscle cells. This leads to paralysis and eventually death, as the toxin prevents normal physiological function. Potassium, chloride, and TDT (transient receptor potential channels) do not play a significant role in the mechanism of action for tetrodotoxin.

Tetrodotoxin Is a Deadly Poison Because It Blocks