Blood Circulation

Definition

Blood circulation is the constant movement of blood throughout the body, carried by the heart. It supplies oxygen and nutrients to our cells and carries away waste products.

Analogy

Think of blood circulation like a city's public transportation system. The heart acts as the central station that sends out buses (blood) on different routes (arteries and veins) to pick up and drop off passengers (oxygen, nutrients, and waste).

Related terms

Arteries: These are large blood vessels that carry oxygen-rich blood from the heart to all parts of the body.

Veins: Veins are blood vessels that carry deoxygenated or waste-rich blood back towards the heart.

Capillaries: These are tiny, thin-walled blood vessels where exchanges of oxygen, carbon dioxide, and other substances occur between the blood and surrounding cells.