immune system timeline

mouth

2000

food enters the mouth and is chewed by teeth where food is broken down.

esophagus

2001

tube connecting the mouth to the stomach where food is pushed down

liver

2002

liver produces bile which helps break downs fats and oils

stomach

2003

food is mixed with acid killing off potential harmful bacteria

pancreas

2004

speeds up breaking up of large nutrients

large intestine

2005

stores food and moves it to small intestine