The Digestive System (VCE SSCE Biology): Flashcards
📚Flashcards
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10 cards from this deck
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Practise the cards
10 cards from this deck
Heterotrophs
Heterotrophs
Organisms that can't make their own food
Digestion
Digestion
Breaking down large food molecules into smaller forms
Physical digestion
Physical digestion
Breaking food into smaller pieces by mechanical movements
Chemical digestion
Chemical digestion
Using enzymes & acid to break down food molecules
Peristalsis
Peristalsis
Wave-like muscular contractions that push food along
Three main digestive enzyme types
Three main digestive enzyme types
Amylases, proteases, lipases
Four stages of digestion
Four stages of digestion
Ingestion, digestion, absorption, elimination
Stomach pH range
Stomach pH range
1-3 (highly acidic)
Main site of nutrient absorption
Main site of nutrient absorption
Small intestine
Purpose of villi & microvilli
Purpose of villi & microvilli
Increase surface area for nutrient absorption