11 You are a tube inside a tube… The tube starts here:And although there are a few twists and turns along the way…Anything that goes into the mouth does not become part of the body until it is absorbed (taken in) in a part called the small intestine.It comes out here:
12 FunctionBreakdown of food into pieces small enough for nutrients to diffuse into cells
68 Did you know… Your teeth started growing 3 months before you were even born The hardest substance in your body is the enamel on your teeth As you are sitting there listening, more than 100 million germs are swimming, feeding, reproducing, and making waste in the area behind your lips. In your mouth there are more living things than there are people in Australia and Canada combined…
69 REVIEW1. Where does mechanical digestion begin? How?2. Where does chemical digestion begin? How?3. Where does chemical digestion end?4. Where does most chemical digestion occur?5. What is the function of the liver?6. What are nutrients absorbed once food has been completely broken down.
70 Did you know....An adult esophagus (also called gullet) ranges from 10 to 14 inches in length, and 1 inch in diameterWe make 1 to 3 pints of saliva a dayAn adults stomach can hold approximately 1.5 liters of materialFood sloshing in the stomach can last 3-4 hoursThe stomach's wall is lined with three layers of powerful muscles
71 Did you know....The Average human being consumes about 500kg of food per year.Within the colon, a typical person harbors more than 400 distinct species of bacteriaOn average, the stomach produces 2 liters of Hydrochloric Acid (HCl) daily
72 Did you know....A full grown horse’s coiled up intestines are 89 feet longFood stays in your stomach for 2 to 3 hoursAmericans eat about 700 million pounds of peanut butter.Americans eat over 2 billion pounds of chocolate a year.In your lifetime, your digestive system may handle about 50 tons!!
73 Did you know....What you ate for breakfast, that was not digested will come out in about 48 hours-normally.From intake to outlet, the digestive tract is about thirty feet long