Water-soluble vitamins (excluding B12 ) are absorbed by

The journey of chyme through the small intestine takes:

Digestive activities are mostly controlled by reflexes of the parasympathetic nervous system.

_____ – study of how organisms acquire and use energy

Digestion is primarily controlled by the:

Bile secretion occurs __________, but bile release occurs __________.

The digestive system breaks down the physical structure of the ingested material and then disassembles the component molecules into smaller fragments through _____

The wall of the small intestine bears a series of folds called the

The esophagus is lined with

The cephalic phase of gastric activity is directed by