B3 - Digestion Flashcards
A group of cells of similar types working together is called a …?
Tissue
A group of tissues working together is called an…..?
Organ
What does the mouth do in digestion?
Teeth grind down food
Break down starch
Mucus makes food slip down easily
What Oesophagus do?
Has uscles in place to push food down
What does the stomach do?
Thick muscles churn food into liquid
Stomach acid kills bacteria
What does diaphragm do?
Main muscle of respiration.
What does liver do?
Produces bile
What does bile do?
Breaks down food in small intestine
What does gall bladder do?
Stores bile
What does pancreas do?
Enzymes or digestive juices are secreted by the pancreas into small intestine
What does the large intestine do?
Undigested food enters from small intestine
Reabsorbs water used in digestion and eliminates undigested food and fibre
What does small intestine do?
Breaks down fat
Breaks down by enzymes
Take the nutrients
What does apendix do?
Storehouse for good bacteria
‘Reebooting’’ the digestive system after diarrheal illnesses
What do carbohydrates do?
Provide us with the fuel that makes reactions possible.
Contain Carbon,Hydrogen and Oxygen
Some contain one sugar units and is glucose others are made up of two like sucrose
Examples : Bread,rice,pasta
What are proteins?
Responsible for building tissue,cells and muscle as well as making hormones and anti-bodies
Examples fish,meat,cheese
Used for building up of cell and tissue and hair and nails. Made up of about 20 amino acids
What are lipids?
Lipids are fats and oils
Lipids are important in your cell membranes as hormones and in nervous system
Are insoluble in water
Examples butter,cheese,cream
What are enzymes
Special proteins involved in metabloism and help speed up reactions. Some help build molecules some break them down and other change one molecule into another
Whatnis the process of dnzymes breaking substrates down?
Substrate goes in active site of enzyme (which it is complementary)
Substrate is in
Substrate is broken into products
Which part of the digestive system does each part work
Carbohydrates - Mouth and small intestine
Protein - Stomach and small intestine
Fats - Small intestine and pancreas
