So on the folds here, on the folds of the small bowel, you can see the finger-like projections of the small bowel lining, which are called villi, and what they do is to increase the surface area of the small bowel hugely.
是以,在這裡的褶皺上,在小腸的褶皺上,你可以看到小腸內膜手指狀的突起,這就是絨毛,它們的作用是增加小腸的表面積。