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...d out of the cell. Furthermore, Na+ and K+ pump keeps the inside of the cell polarised or ionically imbalanced (Marieb & Hoehn, 2013, p.407). A change of membrane potential is caused by a nerve cell stimulation. Thus, the action potential activity occurs and works in a cycle, from resting to excited and back to its original state (Marieb & Hoehn, 2013, p.407). This activity allows neurons to communicate with each other to do a task, but when a neurotoxin enters the body, it can disrupt its normal function. For instance, TTX is a neurotoxin that disrupts action potential by binding into the neuroreceptors of Na+ voltage gated channel (Ruben & Lee, 2008, p. 407). As a result, TTX inactivate the channel, unable to reach threshold. Moreover, TTX is found from the gonads and liver of a puffer fish, and suggest that proper cooking techniques can avoid consuming the toxin.
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