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Human Nutrition & The Digestive System - Coggle Diagram
Human Nutrition & The Digestive System
Concepts
Human nutrition
Nutrients, food groups and their functions
Balanced diet and links to health and lifestyle choices
Organisation of multicellular organisms
Cell → tissue → organ → system → organism
Digestive system as an example of an organ system
Why we need a digestive system
Food too large to enter cells; needs to be broken down
Nutrients absorbed into blood and delivered to body cells for energy
Digestive system
Teeth
Types: incisors, canines, premolars, molars
Structure–function link: cutting, tearing, crushing, grinding
Definition of digestion
Main organs: mouth, oesophagus, stomach, small intestine, large intestine, rectum, anus; accessory organs: liver, gall bladder, pancreas, salivary glands
Five steps to provide the body with nutrition: ingestion, digestion, absorption, transport, egestion
Enzymes & amylase
Enzymes
Enzymes as biological catalysts
Role of enzymes in chemical digestion
Amylase
Amylase acts on starch to produce maltose
Where amylase works: mouth, small intestine
Investigation: digestion of starch by amylase
Interactions with other systems
Digestive–circulatory interaction
Absorption of nutrients into blood in the small intestine
Blood transporting nutrients to cells around the body
Digestive–respiratory interaction
Nutrients + oxygen used in cells for respiration to release energy
Digestive–excretory link
Removal of undigested food as faeces and reabsorption of water in large intestine
Teaching tools & resources
Visuals & models
PPT slides/diagrams of digestive system, teeth, and enzymes
Large body outline or model for “human digestive system” role‑play
Food models/real packaging to discuss nutrients and diet
Active / inquiry learning
Card sorts
Investigation: action of amylase on starch
“Sandwich in a bag” / pop‑sock style model of digestion from investigation suggestion
Literacy & inclusion supports
Word banks and key‑term mats
Sentence stems for explanations and conclusions
Chunked notes, dual‑coded diagrams for dyslexia/literacy needs
Assessment tools
Exit tickets, mini‑whiteboard checks, labelled diagrams, short quizzes
End‑of‑unit concept map: “Journey of a piece of food through the digestive system”