Staying with the digestive system and the enteric nervous system, exposure to bacterial exotoxins can have devastating consequences. Which ONE of the following statements is relating to Cholera Toxin is CORRECT.单项选择题

A

Cholera toxin in the intestinal lumen can produce a prolonged decrease in the excitability of submucosal secretomotor neurons

B

Cholera toxin releases serotonin (5-HT) from enterochromaffin cells in the mucosa and this excites secretomotor pathways

C

Cholera toxin in the intestinal lumen can produce a prolonged decrease in the excitability of myenteric intrinsic sensory neurons

D

Cholera toxin acts directly on the intestinal mucosa to promote hypersecretion with the effects on neurons being secondary to this hypersecretion.

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