Question

What organs are targeted by the hormones secretin and cholecystokinin (CCK) to release pancreatic juice and bile into the small intestine for digestion?

1) gallbladder, stomach, liver
2) liver, spleen, esophagus
3) stomach, spleen, large intestine
4) pancreas, gallbladder, liver

Answer 1

The hormones secretin and CCK target the pancreas, gallbladder, and liver to release digestive juices and bile into the small intestine, with secretin neutralizing acidity and CCK stimulating bile release and enzyme production.

Step-by-step explanation:

The hormones secretin and cholecystokinin (CCK) specifically target the pancreas, gallbladder, and liver to facilitate the release of pancreatic juice and bile into the small intestine for digestion. Secretin stimulates the pancreas to produce an alkaline bicarbonate solution and deliver it to the duodenum to neutralize acidic chyme. CCK stimulates the pancreas to produce pancreatic juices and also stimulates the gallbladder to release bile into the duodenum. Secretin stimulates the pancreas to produce a bicarbonate-rich solution to neutralize the acidity, while CCK not only promotes the secretion of digestive enzymes by the pancreas but also triggers the gallbladder to release bile. These actions are essential for the digestion of proteins and fats in food.