Digestion Flashcards
Label the digestive system
Mouth
Epiglottis
Oesophagus
Diaphragm
Liver. Stomach
Gall bladder. Bile duct
Pancreas
Duodenum
Small intestine. Large intestine
Appendix
Rectum
AnusWhat do carbohydrates do?
Provide energy
What does protein do?
Helps growth
What does water do?
Transports solvent
What does fibre do?
Prevents constipation
The presence of sugar can be confirmed by using _____________. If sugar is present this chemical will change from _____________ to _____________ whenever it is heated in a water bath.
Benedict’s reagent
Blue/green to brick red
Starch can be detected by using __________. __________ changes from ________ _________ to _______________ if starch is present.
Iodine
Iodine
Orange yellow to blue black
Biuret solution can be used to detect the presence of _________. ___________ will change the biuret solution from a light blue colour to a _________ colour.
Protein
Protein
Violet
State 2 things which happens to food in the mouth
Food is broken up by teeth and tongue
Saliva breaks food down
State 2 things which happens in the stomach
Acid breaks down food into smaller substances that can enter the blood stream
What is the correct order for digestion?
Ingestion Digestion Absorption Assimilation Egestion
What part of the digestive system does digestion start?
The mouth
What is peristalsis?
The muscular contractions that push food through the digestive system
What is the purpose of acid in the stomach
To kill germs and activate enzymes that digest protein
Which 3 features are found in the ileum to speed up absorption?
Long, thin walls covered in villi
