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Digestive system
Structure and functions of parts of the digestive system
| Question | Answer |
|---|---|
| Mouth cavity | mechanical digestion by teeth. chemical digestion by saliva |
| Pharynx | tongue pushes food into the pharynx for swallowing |
| Oesophagus | carries food from the mouth to the stomach. |
| Stomach | mechanical digestion by churning action chemical digestion by intestinal and gastric juices |
| Pyloric sphincter | regulates flow of material from stomach to duodenum |
| Pancreas | produces pancreatic juice containing enzymes for digestion |
| Small intestine | lining-secretes intestinal juice internal surface-lined with villi for absorption of digested food |
| Salivary glands | produce saliva which help dissolve food |
| Liver | produces bile |
| Gall bladder | stores bile and releases it into small intestine |
| Duodenum | first part of small intestine |
| Anus | where faeces leave body |
| Rectum | where faeces are formed |
| Transverse colon Ascending colon Descending colon | Absorbes water, minerals and vitamins |