The Stomach (OCR GCSE Biology A (Gateway Science Suite)): Flashcards
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15 cards from this deck
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Practise the cards
15 cards from this deck
Shape and location of stomach
Shape and location of stomach
J-shaped organ between oesophagus and small intestine
Churning
Churning
Mixing food with digestive juices by stomach muscle contractions
What gastric glands secrete
What gastric glands secrete
Gastric juice
Three components of gastric juice
Three components of gastric juice
Hydrochloric acid (HCl), pepsin, and mucus
Role of HCl in the stomach
Role of HCl in the stomach
Creates acidic environment, kills bacteria, optimal pH for pepsin
Type of enzyme pepsin is
Type of enzyme pepsin is
Protease enzyme
Function of pepsin
Function of pepsin
Breaks down proteins into smaller peptides
Inactive form of pepsin
Inactive form of pepsin
Pepsinogen
What activates pepsinogen
What activates pepsinogen
Acidic environment
Function of mucus in stomach
Function of mucus in stomach
Protects stomach lining from digesting itself
Chyme
Chyme
Semi-liquid form of food after stomach churning
Valve between oesophagus and stomach
Valve between oesophagus and stomach
Lower oesophageal sphincter
Valve between stomach and duodenum
Valve between stomach and duodenum
Pyloric sphincter
Duodenum
Duodenum
First part of the small intestine
Two types of digestion in the stomach
Two types of digestion in the stomach
Mechanical (churning) and chemical (gastric juice)