From the vena cava (superior and inferior), the blood enters the heart (right atrium), is pumped into the right ventricle, and then pumped into the lungs (through the Pulmonary Arteries), where carbon dioxide is exchanged for oxygen.
Harlan, Iowa. Harlan is a city in Shelby County, Iowa, United States, along the West Nishnabotna River. The population was 5,106 at the 2010 census. It is the county seat of Shelby County.
Iowa City is a city in Johnson County, Iowa, United States. It is the only City of Literature in North America, as awarded by UNESCO in 2008. As of the 2010 Census, the city had a population of about 67,862. The U.S. Census Bureau estimated the 2015 population at 74,220, making it the state's fifth-largest city. Iowa City is the county seat of Johnson County and home to the University of Iowa.