Along folded tube inside the body attached to the stomach where nutrients in the food are absorbed is

The Answer is Small Intestine

Explanation:

A small intestine is attached to the stomach and goes all the way to the anus. Despite it's name it is not really small. It was average size. 20 feet long and about one inch thick in diameter. However, the size can greatly vary in some people from as small as 10 feet to as large as 34 feet.

As our food passes through the small intestine, small fibers start to absorb as much nutrients and minerals it can from the food.

Along with humans it is found in every four-limbed animal and is particular large in herbivors.