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.
Wright County, Iowa. Wright County is a county located in the U.S. state of Iowa. As of the 2010 census, the population was 13,229. The county seat is Clarion. The county was formed on January 15, 1851, and named after Silas Wright, a governor of New York, and Joseph Albert Wright, a governor of Indiana.