We eat food regularly because it provides us the right amount of energy needed in everyday work. If we don't eat food, we will become weaker and weaker.
The food we eat is broken from larger molecules into smaller ones. This process is called digestion. This is the basic function of digestive system.
Functions of digestive systemEdit
All the organs of a digestive system are very responsible. Organs of digestive system are mouth, oesophagus, stomach, small intestine, liver, kidney, gallblader, pancreas, spleen, Cecum, Appendix, Ileum, Acending colon, Hypetic Flexure, Duodenum, Gallblader, transverse colon, jejunum, decending colon and Sigmoid Flexure.
The mouth is the part of digestive system through which we eat. This p
art of digestive system is also called inner cavity in anatomy.
Sutructures of MouthEdit
The basic sutructures of mouth are teeth, gums, tongue, tonsils, soft palate, hard palate, upper lips and the lower lips.
The food in our body after passed by mouth then passes from the oesofhagus. This organ is only found in vertebrates. It is about 25 cm long. It lies behind
the heart and spinal column. ulceration and bleeding are the disorders of esophagus. T
hese teo diseases are caused by gastric juices.
Esophagus is not of same lenghth in all animals. In some fish, esophagus is very small while in others it is extremely large.
There are four coats in an esophagus:
1. fibrous coat
2. muscular coat
3. aereoral coat
4. internal coat.
Part of digestive system including oesophagus