Structure of digestive system process of digestion in mouth, stomach & intestine
Answers
Answer:
The digestive process starts in your mouth when you chew. Your salivary glands make saliva, a digestive juice, which moistens food so it moves more easily through your esophagus into your stomach. Saliva also has an enzyme that begins to break down starches in your food.
The digestive system
Digestive system:
Step by step explanation:
The digestive system is so designed that allows the food ingested to be converted into nutrients. It is later actively taken up by the body that helps it to grow.
The distinct functions of the mouth, stomach and the intestine are as under:
1) Mouth: The mouth is the starting point of digestion. It takes the food and chews it into small pieces. The saliva mixes with the food so that it may easily be absorbed by the body.
2) Stomach: The stomach is designed as a sac-like organ with strong muscular walls. Apart from holding food it acts as a mixer or grinder. It secretes powerful enzymes and acids that helps further breaking down of food. Before leaving the stomach, the food is converted into paste-like consistency that is easily absorbed by the body. The food then travels to the small intestine.
3) Small Intestine: The small intestine is distinctly divided into three main segments, i.e. the duodenum, jejunum and the ileum. The further breaking down of food still continues in the small intestine. It also releases enzymes from the pancreas and bile from the liver that further helps in the breakdown and the absorption of food. Peristalsis or contractions further helps in the breakdown and the movement of food. The small intestine and its different parts are responsible for the absorption of the nutrients and releasing them into the blood stream.