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.
Waverly is a city in Bremer County, Iowa, United States. The population was 8,968 at the 2000 census. It is the county seat of Bremer County and is part of the WaterlooâCedar Falls Metropolitan Statistical Area. The sister city of Waverly is the German city of Eisenach, which is famous for the Wartburg castle. Waverly is also the home of Wartburg College which is named after this castle. The first permanent residents of Waverly were settled there against their will.