Question

The contraction of fall bladder is due to?

Answer 1

ANSWER

• Cholecystokinin-8 placed in the gallbladder lumen causes gallbladder contraction by a neurally mediated, tetrodotoxin-sensitive mechanism.
• This may be mediated through receptors of the cholecystokinin-B type, possibly on intrinsic nerves.

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Answer 2

Answer:

Postprandial gallbladder contraction is triggered by gastric emptying leading to the release of CCK from enteroendocrine I cells in the epithelial lining of the duodenum.