SUMMARY
Digestive system is the parts of body that take part in the process of digestion.
Mouth, oesophagus, stomach, small and large intestines, liver and pancreas are the components of human digestive system.
Digestion is a process of changing the food into simpler form. This process helps our body to get important nutrients.
Some parts of our digestive system secrete chemicals which change carbohydrates (in mouth), proteins (in stomach) and fats into simpler substances. These substances are then absorbed into blood.
Diarrhoea, heartburn, constipation, ulcer, gas-trouble, etc. are some common disorders of digestive system.
Diarrhoea may be caused by an infection, by eating contaminated food or a reaction to some medicine.
Washing hands frequently and washing fruits and vegetables before eating or cooking can help to prevent diarrhoea.
Constipation may be caused by taking food low in fibre, lack of physical activity, not drinking enough water, etc.
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