The Inferior vena cava-just like the Superior vena cava -, returns blood to the heart. When blood is returning to the heart, that blood is already circulated in the body, therefore it is already downloaded the oxygen to the body tissues, and picked up the carbon dioxide from them.
Harrington is located in Kent County in Delaware. 1  Population: 3,582. 2  Area: 2.75 sq. miles Land Area: 2.75 sq. miles. 3  Population Density: 1,300.65 people per sq. mile.  Elevation: 49.54 1  ft. Time Zone: Eastern Standard Time (GMT 2  -5) Daylight Savings:  Yes.
Flagstaff Metro Area Population and Races. As of 2010-2014, the total population of Flagstaff Area is 135,817. The Flagstaff Area population density is 7.28 people per square mile, which is much lower than the state average density of 57.56 people per square mile and is much lower than the national average density of 82.73 people per square mile.