The Digestive System Flashcards
Types of breakdown
Physical change/breakdown
Chemical change/breakdown
What is the function of the digestive system?
Food is broken down into tiny particles
Waste is excreted
Nutrients are past in the blood
Physical change
Teeth grinds foods
Stomach churns food into chyme
Chemical changes
Digestive enzymes breakdown macronutrients
Protein
Amino acids
Fat
Fatty acids and glycerol
Carbohydrates
Glucose, simple sugars
Mouth, sailva
Cut grinds foods
Salivary amalayse carbs —> maltose
Oesophagus
Pushes food in stomach peristalsis
Stomach
Turns food into chyme produces enzyme, acid in stomach helps pepsin breaks down protein
Liver
In gall bladder produces bile to break down fat
Pancreas
Produces enzymes
Small intestine
Causes chemical changes
Absorbs nutrients in the blood vessels
Absorption
Movement of digested food from the small intestine into the blood
Villi
Tiny hair like fingers, digested food through villi into blood vessel
Glucose and amino acids
Goes into blood
Fatty acids and glycerol
Lymph system then into blood
Blood vessels
Puts digested into cells
Large intestine
Faeces is pushed out of rectum by peristalsis
Healthy digestive system
High fibre diet High water intake Reduce alcohol intake See doctor for digestive problems Eat/drink probiotic food
