Villus (Latin: "shaggy hair"[1], plural villi) can refer to: Latin was the language originally spoken in the region around Rome called Latium. ...
Intestinal villus. This is the most common meaning when not more precisely specified
Chorionic villi, found on the surface of the outermost membrane (the chorion) of the fetus
Arachnoid villi, located on the arachnoid membrane of the brain
For other meanings of villus/villi, see villi. ... The chorion undergoes rapid proliferation and forms numerous processes, the chorionic villi, which invade and destroy the uterine decidua and at the same time absorb from it nutritive materials for the growth of the embryo. ... Arachnoid granulations (and arachnoid villi) are small protrusions of the arachnoid (the thin second layer covering the brain) through the dura (the thick outer layer). ...
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