Digestive system parts and functions
- how is food digested in our body
- how is food absorbed in our body
- how is food broken down in your body
- describe how food is digested in our body
Human digestive system parts and functions pdf
Digestive system function!
How do humans digest food?
Follow me please, class.
We’re in this cafeteria to investigate human digestion.
Digestion is a process of food being broken down and absorbed to give the body energy and help it grow.
Since it all takes place inside the body, we’re going to need our virtual biology headsets.
Everyone ready?
Headsets ON!
Welcome to the human mouth, where teeth chew food into smaller pieces and saliva begins to break it down.
Saliva contains digestive enzymes, special molecules that speed up the breaking down of food.
Next stop, the stomach.
Wheeee!
If you travel all the way down the throat you reach the stomach, where chewed food is broken down by more enzymes and stomach acid and gets turned into a sort of liquidy mush.
This mush then passes into the small intestine: a long, squiggly tube, that, if it was unravelled, would measure 10 times the length of the body it comes from.
This is where digestion really gets going, with more large food molecules getting broken down into small food molecules.
Good stuff like proteins, carbohydrates and vitamins get sepa
- describe how food is digested in our body class 3
- how are food digested in our body where does this process take place