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 has a total of 50,731 people and of those residents there are 26,491 males and 24,240 females. The median age of the male population is 23.3 and the female population is 24.1. There are approximately 940 births each year and around 474 deaths.