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.
Ames, IA has a population of 62,815 people with a median age of 23.2 and a median household income of $41,616. Between 2014 and 2015 the population of Ames, IA grew from 61,276 to 62,815, a 2.51% increase and its median household income declined from $42,373 to $41,616, a -1.79% decrease. The population of Ames, IA is 81.8% White, 9.2% Asian, and 3.14% Black.