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← Human Body & HealthWhy does the venom of certain snakes, containing alpha-bungarotoxin, lead to paralysis following a bite?
A)Blocks voltage-gated sodium channels
B)Blocks acetylcholine receptors✓
C)Inhibits acetylcholinesterase activity
D)Interferes with dopamine reuptake
💡 Explanation
Alpha-bungarotoxin causes paralysis because it binds tightly to the nicotinic acetylcholine receptors at the neuromuscular junction, blocking acetylcholine from binding and triggering muscle contraction. Therefore, muscle activation is prevented, rather than other disruptions to neural signaling.
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