Answer:
The answer is Small intestine.
Explanation:
Liver and pancreas produce enzymes which breaks down carbohydrate, protein and fat into smaller molecules. It takes place in duodenum, which is the first part of small intestine.
(Correct me if I am wrong)
They are natural pain and stress relievers and with excerise it helps the heart pump blood with less effort.
Your immune system uses a huge army of defender cells - different types of white blood cell. You make about 1000 million of them every day in your bone marrow. Some of these cells, called macrophages, constantly patrol your body, destroying germs as soon as they enter. This is your 'natural' or inborn immunity. But if an infection begins to take hold, your body fights back with an even more powerful defence of T- and B-cells. They give you acquired immunity, so that the same germ can never make you as ill again.
I was looking thru my old bio notes and I believe it’s caused by emphysema since it says that it’s caused by an irritant (like smoke)