the digestive system is the process of digestion has many stages, the first of which starts in the mouth (oral cavity). Digestion involves the breakdown of food into smaller and smaller components which can be absorbed and assimilated into the body.
the parts of the digestive system are:
mouth
salivary gland
pharynx
esophagus
liver
stomach
gallbladder
pancreas
small intestine
large intestine
anus