Blood Circulation

Blood Circulation

Blood circulation is the process by which the heart, blood, and blood vessels work together to transport oxygen, nutrients, and waste throughout the body. This system is called the circulatory system. The heart pumps blood through arteries and veins to different parts of the body, and blood carries oxygen...

Blood circulation keeps us alive by moving blood through the heart, lungs, and the rest of the body with each heartbeat.

First, oxygen-poor blood enters the right atrium, flows into the right ventricle, and is then pumped to the lungs through the pulmonary arteries.

In the lungs, it picks up oxygen and releases carbon dioxide, which ...