Question

What are all the components of the digestive system?

Answer 1

Digestive system consists of digestive tract and associated organs like salivary glands, liver and pancreas.

Explanation:

The digestive tract in a mammal starts with mouth and ends in anus.

The tract is serially divided in:

Oral cavity
Pharynx
Oesophagus
Stomach
Small Intestine
Large Intestine.

• 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.