The spleen helps make blood cells and filters out old blood cells. It’s possible to live a healthy life without a spleen. People without a spleen should be extra careful about infections and may need ...

The cardiovascular system includes the heart and blood vessels and is responsible for transporting oxygen and blood throughout the body. Cardiovascular disease is the number one cause of death ...

What do the kidneys do in our body? The kidneys are highly complex organs that control substances in the blood, blood pressure, and the amount of fluid in the body. They also keep the blood clean and ...