A 28-year-old woman is brought to the emergency department because of a one-hour history of perioral tingling, dyspnea, weakness, vomiting, and incoordination. She says “hot feels cold and cold feels hot.” Her symptoms began about 15 minutes after eating mahimahi at a restaurant. The toxin most likely responsible acts on which of the following?
Calcium channels
cAMP
cGMP
Potassium channels
Sodium channels
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Cut-to-the-chase Answer (0:45):
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HY USMLE Answer (5:07):
