Question

What are the layers of gastrointestinal tract? What is their function?

Answer 1

Hint: Gastrointestinal tract is the tract that starts from mouth to the anus which includes all the organs of the digestive system this helps in absorption of energy from the food and the waste is expelled as faeces.

Complete answer:
The gastrointestinal tract includes the mouth pharynx oesophagus, stomach, small intestine, large intestine rectus and anus.it is a part of the digestive system.

Functions as follows
1. It is included in transportation, digestion and absorption of food.
2. Gastrointestinal tracts help in motility of the food this means in the movement of food.
3. helps with the secretion of nutrients from the food both endocrine and exocrine secretion.
4. Exocrine secretion includes water HCL bicarbonates that occur in the stomach alone.
5. Endocrine secretion occurs in the stomach and small intestine with secretion of hormones that regulate the digestive system.
6. It helps in breakdown of food particles into smaller units this is known as digestion.
7. absorption of digested food and production into blood and lymph.
8. It also helps in storage and elimination of food.

Layers of gastrointestinal include four types of layer: the innermost layer is known as mucosa under which lies submucosa which is followed by muscularis propria and the outermost layer known as adventia. These layers are of different sizes depending upon the region in which they are present.

Note: Gastrointestinal diseases can be caused by eating a low fibre diet not exercising properly for traveling or change in routine diseases usually includes symptoms such as bloating and excess gas constipation diarrhoea