chorionic terminal villus
The most distal part of a chorionic villus. A chorionic terminal villus is a grape-like structure characterized by a high degree of capillarization and highly dilated sinusoids. A terminal villus has less stroma and a discontinuous cytotrophoblast layer, and contains 4–6 fetal capillaries per cross section. It exhibits a diameter ranging from 40 to about 80 μm.