Which toxin is responsible for the characteristic rigid paralysis of generalized tetanus in a horse?
Correct answer: A. Tetanospasmin from Clostridium tetani
- A. Tetanospasmin from Clostridium tetani
- B. Botulinum toxin from Clostridium botulinum
- C. Endotoxin from Escherichia coli
- D. Alpha toxin from Clostridium perfringens
Explanation
Tetanospasmin blocks inhibitory neurotransmission, producing muscle rigidity, spasms, and a locked jaw. Botulinum toxin causes flaccid paralysis, which is the important contrast in this question.
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