The small intestine is called "small" because of its 1-inch width. Despite its small size, it is covered in various folds and ridges, which allow for better absorption of nutrients and fluids.

The intestines have lots of tiny folds in them which create a large surface area for absorbing nutrients and water. In the small intestine there are also specialised structures called villi which ...

The intestines have lots of tiny folds in them which create a large surface area for absorbing nutrients and water. In the small intestine there are also specialised structures called villi which ...