Release of secretin leads to a. contraction of smooth muscle in the duodenal papilla. b. increased secretory activity of liver cells. c. contraction of the gallbladder wall. d. release of...

Release of secretin leads to

a. contraction of smooth muscle in the duodenal papilla.

b. increased secretory activity of liver cells.

c. contraction of the gallbladder wall.

d. release of bicarbonate-rich fluid by the pancreas.

The pH of chyme entering the duodenum is adjusted by

a. bile.

b. intestinal juice.

c. enzyme secretions from the pancreas.

d. bicarbonate-rich secretions from the pancreas.