What are all the components of the digestive system?
Digestive system consists of digestive tract and associated organs like salivary glands, liver and pancreas.
The digestive tract in a mammal starts with mouth and ends in anus.
The tract is serially divided in:
- There are teeth and tongue inside oral cavity. This continues in oesophagus through a common passage (for both air and food) called pharynx.
- Stomach is divided in fundus, corpus and pylorus.
- Small intestine is divided in duodenum, jejunum, ileum.
- Large intestine is divided in caecum, colon and rectum.
- There are three pair of salivary glands: sublingual, submaxillary and parotid which secrete saliva, an enzymatic lubricating fluid in oral cavity.
- Liver juice is stored in a sac called Gall Bladder and released in duodenum. The juice is called bile, which is nonenzymatic but most important for fat digestion.
- Pancreas also secretes its enzymatic juice in duodenum.