show and explain each thing in human digestive system
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The organs which help in digestion make a digestive system. The main parts of human digestive system are ---
Mouth : First food is taken in mouth . The first teeth bite it into pieces at the same time the tonge mixes it with saliva.
Oesophagus : The oesophagus or food pipe is a narrow tupe that connects the mouth to the stomach. The food passes through it and reach to the stomach.
Stomach : The stomach has strong muscular walls. The stomach wall contains cells, which secrete gastric juices. It is a colourful liquid containg water, some salt,hydrocloric acid and an enzyme called pepsin.
Small Intestine : It is a coiled tube just beneath the stomach. it os divided into three parts - duodenum, jejunum and ileum. Here bile juice is secreted by liver .Here all the usefull things are absorbed from the food.
Large Intestine: It has three parts caecum, colon and rectum.In the large intestine, liquits and salts are absprbed until only solid waste is left . The final waste material is passed out of the body through the anus as faeces.
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Mouth : First food is taken in mouth . The first teeth bite it into pieces at the same time the tonge mixes it with saliva.
Oesophagus : The oesophagus or food pipe is a narrow tupe that connects the mouth to the stomach. The food passes through it and reach to the stomach.
Stomach : The stomach has strong muscular walls. The stomach wall contains cells, which secrete gastric juices. It is a colourful liquid containg water, some salt,hydrocloric acid and an enzyme called pepsin.
Small Intestine : It is a coiled tube just beneath the stomach. it os divided into three parts - duodenum, jejunum and ileum. Here bile juice is secreted by liver .Here all the usefull things are absorbed from the food.
Large Intestine: It has three parts caecum, colon and rectum.In the large intestine, liquits and salts are absprbed until only solid waste is left . The final waste material is passed out of the body through the anus as faeces.
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