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Digestion System (Organs of the digestion system (Mouth: take in food -…
Digestion System
Organs of the digestion system
Mouth
: take in food - crush food
Oesophagus
: carry food down to stomach
Stomach
: Churn the food - add acid to the food
Small Intestine
: Absorption of food into bloodstream
Large Intestine
: Water is absorbed into blood - leaves waste behind
Salivary glands
: make saliva, which contains enzymes and amylase
Liver
: Produces bile which digests fat - regulates amount of each food in the blood
Gall Bladder
: stores bile until needed
Pancreas
: produces enzymes to beak down food
5 Steps to provide Nutrition
1.
Ingestion
- the taking in of food
Digestion
- the breaking down of food
Absorption
- the food passing into the blood
Assimilation
- the food being put to use by cells
Egestion
- passing out of any waste material in faeces
Teeth and Functions
Incisors
- cut and slice food
Canines
- grip and tear food
Premolars
- crush and grind food
Molars
- crush and grind food
Why we need food
Energy
Growth
Repair