Which Type of Veins Connect Two Primary Capillary Networks

Question

Which type of veins connect two primary capillary networks?
A) portal veins
B) venous sinuses
C) venules
D) vaso vasorum

Accepted Answer

Portal veins connect two primary capillary networks and are found in specific areas, such as the hepatic portal vein connecting the capillaries of the intestines to the capillaries of the liver. Venous sinuses are large, thin-walled veins found in certain organs (such as the spleen) and do not necessarily connect two primary capillary networks. Venules are small veins that connect to larger veins, but do not necessarily connect two primary capillary networks. Vaso vasorum are networks of small blood vessels that supply blood to the walls of larger blood vessels, and do not necessarily connect two primary capillary networks.