Each villus has two sets of vessels.
"The People's Common Sense Medical Adviser in Plain English" by R. V. Pierce
Write as explicit an account as you can of the absorbent action of a villus.
"Text Book of Biology, Part 1: Vertebrata" by H. G. Wells
Villus: a short, hair-like or papillate process on the surface of certain absorbent and sensory organs.
"Explanation of Terms Used in Entomology" by John. B. Smith
The fats in the form of soaps and fatty acids pass into the space in the center of the villus.
"A Civic Biology" by George William Hunter