Question

What are the major structures and functions of the digestive system?

Answer 1

⭐Oesophagus :- It provide peristaltic movement by which the food can easily pass through the mouth to the stomach.


⭐Stomach :- Stomach is a bag of sac like structure.

On the wall of stomach there is a gland known as gastric gland.

Gastric gland secrete gastric juice.
Which contain HCl that form the medium of stomach acid for the action of enzymes.
And kill the germs.

Enzymes like pepsin is also secreted from the gland which breakdown protein into polypeptide.

⭐ Liver :- it is the largest gland in our body.
It secret bile juice which convert larger fat molecules into smaller one.

⭐ Gall bladder :- it store bile.

⭐ Pancreas :- It is the gland which secrete enzymes as well as harmons that's y it is also called as mixed gland.

⭐ Small intestine :- Here all the juice of bile and pancreatic juice act.

It has the Villi which increase the surface area for more absorption.

@Altaf

Answer 2

stomach it has j shape structure and it helps in digesting proteins into peptides and when the food goes down it is received by small intestine which has three parts namely duedonum jejanum and ileum .so in this the food gets completely digested all the components present in good get converted into their simpler form hence it is then received by villi and then the remaining go to large intestine where water is absorbed