Definition of solubility. 1) The amount of a solute that will dissolve in a specific solvent under given conditions.
The small intestine is where most chemical digestion takes place. Most of the digestive enzymes in the small intestine are secreted by the pancreas and enter the small intestine via the pancreatic duct. These enzymes enter the small intestine in response to the hormone cholecystokinin, which is produced in response to the presence of nutrients.
They are secreted by the salivary glands, stomach, small and large intestines, liver, and pancreas. Enzymes often derive their names from the substances on which they act. Each enzyme is effective only on a specific nutrient (see Table 26-2).