Thoroughfare channels

A) Simple squamous epithelium of capillaries
B) Drain capillary networks
C) Regulate blood flow into capillaries
D) Do not have fenestrae
E) Bypass capillary beds

Thoroughfare Channels

Specialized vascular passages in the microcirculation, enabling blood flow from arterioles to venules and bypassing capillary beds.

Fenestrae

Small openings or pores in the endothelial cells of capillaries that allow for the exchange of substances between blood vessels and tissues.

Capillary Beds

Networks of capillaries functioning together to exchange gases, nutrients, and wastes between blood and tissues.