| | Conditions & Treatments | Digestive Health What organelle in mouth is for digestion? There are no organelles in the mouth that are responsible for digestion. Digestion begins in the stomach, where gastric juices break down food. Digestive Health - Related Articles Symptoms of the Noro Virus Uses for Dicyclomine Causes of Chronic Stomach Aches Is it common to burp after a gallbladder attack? Behavior Due to Pinworms Treatment During an Acid Reflux Episode Does the stomach have thicker walls than small intestine in a frog?