Digestive system
- Created by: Victoria
- Created on: 29-12-14 05:39
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Digestive System
Digestion is the process where large insoluble molecules of food are broken down to produce small soluble molecules suitable for absorption
Mouth
- Teeth chew (mechanical digestion), make large surface area for enzymes to act on
- Salivary glands produce saliva containing mucus to help food move easily down oesophagus
- Amylase breaks down starch into maltose
Oesophagus
- Peristalsis, where circular muscles contract squeezing food forward
Stomach
- Produces gastric juice
- Pepsin breaks down protein
- Hydrochloric acid creating pH 2, kills bacteria and best environment for enzymes
- Mucus to protect lining of stomach from being digested
- Muscles in the wall of the…
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