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Digestive System

Year 8 Science/ Body Systems

QuestionAnswer
Where does digestion start? Mouth
The enzyme in saliva that starts digestion Amylase
Where is bile produced? The liver
Organ that starts mechanical digestion The mouth by chewing food
What is the function of bile? Neutralise stomach acids and break down fats
Which organ stores bile? The gallbladder
The small intestine To absorb most nutrients from digested food
The stomach To break down food using digestive acids and enzymes
The large intestine To absorb water and form solid waste
The esophagus Transports food from the mouth, through the throat, to the stomach
What type of digestion uses enzymes to break food down? Chemical
What is a mechanical digestion? Mechanical digestion is the physical breakdown of food into smaller pieces, like chewing and stomach churning.
What is a chemical digestion? Chemical digestion is the breakdown of food into simpler nutrients using enzymes and acids, so the body can absorb them
Two organs that perform chemical digestion Stomach and small intestine
The role of pancreas in digestion The pancreas makes enzymes to digest food and neutralizes stomach acid
Where does most food absorption into the blood happen? Small intestine
Why are digestive enzymes necessary? they break down food into small molecules that the body can absorb and use.
First step of Digestion Mouth – chewing and saliva start digestion
Second step of Digestion Esophagus – moves food to the stomach
Third step of Digestion Stomach – mixes food and starts breaking it down
Fourth step of Digestion Small intestine – digestion continues and nutrients are absorbed
Fifth step of Digestion Large intestine – water is absorbed
Sixth step of Digestion Rectum and anus – waste is stored and then removed from the body
Created by: angel_123
 

 



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