Which of the following is the most important stimulus for contraction of the gallbladder?
a. CCK causes contraction of the gallbladder.
b. mechanical contraction of the small intestine causes bile to be forced out of the gallbladder.
c. sympathetic stimulation causes contraction of the gallbladder.
d. an increase in bile secretion by the liver causes contraction of the gallbladder.
e. bile salts cause contraction of the gallbladder.
A
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