All vessels feature varying lumen size. The lumen is the hollow opening or the space inside the blood vessel. Artery Vein Capillary Function Carry blood away from the heart (usually oxygenated ...
The Sinks of Gandy is a cave near Osceola, West Virginia, in eastern Randolph County, through which Gandy Creek tunnels. A journey through the "sinks" is a favorite rite of passage for many ...
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