Digestive process
Storyboard-Text
- MOUTHFood enters the alimentary canal through the mouth. It is chewed by teeth and broken into smaller pieces. The food is mixed with saliva that contains enzymes.
- LIVERIn the digestive system, the liver produces bile which helps with the digestion of fats and oils.
- GALLBLADDERThe gallbladder is where bile is stored and concentrated.
- PANCREASBiological catalysts called enzymes are produced in the pancreas. Digestive enzymes speed up the breaking down of large nutrient molecules.
- SMALL INTESTINESFood is mixed with digestive enzymes and bile in the small intestines. The enzymes speed up the digestion process. Nutrients are then absorbed into the bloodstream.
- ESOPHAGUSThe fibromuscular tube connecting the mouth to the stomach is called the esophagus. Food is pushed down using a wave like muscular motion called peristalsis.
- LARGE INTESTINESThe large intestines are made up of two parts: the colon and the rectum. In the colon, water is reabsorbed from the food. Feces are stored in the rectum until they are ready to be passed.
- ANUSFeces leave the alimentary canal through the anus.
- STOMACHThe stomach is the muscular organ where food is mixed with gastric juices. Gastric juice has a low pH, meaning it is acidic, and is used to help digest food and kill potentially harmful bacteria.
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