DIGESTION

emilywilliams
Mind Map by emilywilliams, updated more than 1 year ago
emilywilliams
Created by emilywilliams almost 5 years ago
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BIOLOGY UNIT 1
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DIGESTION
1 INGESTION: where food is taken into mouth cavity
1.1 MECHANICAL BREAKDOWN: large pieces are broken down to increase surface area for action of enzymes
1.1.1 PERISTALSIS: movement of food via squeezing of muslces
1.1.1.1 CHEMICAL BREAKDOWN: enzymes are responsible for breakdown of organic compounds
1.1.1.1.1 ABSORPTION: occurs across the small intestine which has a large surface area due to villi
1.1.1.1.1.1 ELIMINATION: removal of undigested food in the form of faeces
1.1.1.1.1.2 water and organic compounds
1.1.1.1.2 protease, lipase, amylase
1.1.1.2 oesophegus & small intestine
1.1.2 teeth
1.1.3 churning of stomach
1.1.4 emulsification
1.2 teeth to grasp, tear or chew food
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