Digestive system

• Mouth chews food and adds salive to break down food
• Oesophagus travels food down to stomach through petestalsis
• Stomach releases stomach acids to breakdown food
• Liver produces bile
• Gall bladder stores bile
• Pancreas releases enzymes
• Small intestine absorbs nutrients into blood stream
• Large intestine absorbs water
• Bile raises ph scale of small intestine to optimum for lipase activity
• Ingestion is when food is taken in through the mouth
• Digestion is when large molecules are broken into small by enzymes
• Egestion is food being removed from body
• In the small intestine small soluable molecules are absorbed into the blood
• Bile breaks down large fat droplets into small by emulsifying it also increases surface area for enzyme action
• Bile neutralises stomach acids which is carried by the food coming down from mouth
• Bile duct carries bile from the gall bladder to small intestine
• Epiglottis stops food from going down trachea