Digestion
How does our body digest food?
Why do we need food?
Digestive system digests food into smaller substances
Produces enzymes that speed up the digestion of the food
digestion starts in the>>>
mouth
-digests proteins
small intestine
-digests carbonhydrates
stomach
-absorbs digested food, water and mineral salts
-produces acid that kills bacteria
-digests carbonhydrates, proteins and fats
-source of energy for our body to do work
-source of nutrients for our body to build new cells and repair damaged or worn-out cells
undereating
-lack of energy and nutrient -growth
overeating
-increased risk of diabetes and heart disease -obesity
How does our body get energy from digested food
digestive system