Organisation

• What is the primary function of the human digestive system?

  To break down food into small molecules
• Where does mechanical digestion begin in the human digestive system?

  In the mouth
• What is the purpose of chewing food in the mouth?

  To increase surface area for enzymes
• Which enzyme is responsible for breaking down starch in the mouth?

  Amylase
• What role does pepsin play in the stomach?

  It breaks down proteins into smaller peptides
• What does the pancreas secrete into the small intestine?

  Digestive enzymes like lipase and amylase
• What is the function of lipase in digestion?

  To break down fats
• What does amylase do in the digestive process?

  It breaks down carbohydrates
• What is the role of bile in digestion?

  To emulsify fats
• Where are small molecules absorbed into the bloodstream?

  Via the villi in the small intestine
• What happens to the small molecules after they are absorbed?

  They are transported to cells for metabolism
• What are the main steps of the human digestive process?

  1. Mechanical digestion in the mouth
  2. Enzyme digestion by amylase
  3. Protein breakdown by pepsin in the stomach
  4. Pancreatic enzymes (lipase and amylase) in the small intestine
  5. Bile emulsifies fats
  6. Absorption of small molecules via villi
  7. Transport to cells for metabolism