Blood flows through your heart, lungs and body in a series of steps. It delivers oxygen and nutrients to all your organs and tissues and removes waste.

Sep 4, 2024 · In your tissues, blood oxygen is exchanged for waste in tiny networks of blood vessels called capillaries. After leaving the tissues and organs, your blood returns to your heart through …

Right atrium: Two large veins deliver oxygen-poor blood to your right atrium. The superior vena cava carries blood from your upper body. The inferior vena cava brings blood from your lower body. Then …

Mar 11, 2024 · Your hepatic veins are located in your liver. They drain oxygen-poor blood from your liver into your inferior vena cava. From there, the blood flows to your heart.

The heart pumps blood through the mitral valve into the left ventricle. From the left ventricle, the blood flows through the aortic valve to the rest of your body.

Nov 5, 2025 · In the process: Blood flows into your kidneys through a large blood vessel called the renal artery. Tiny blood vessels in your kidney filter the blood. The filtered blood returns to your …

Feb 24, 2022 · Your aorta is the main blood vessel through which oxygen and nutrients travel from the heart to organs throughout your body.

Oct 11, 2022 · Your internal and external carotid arteries give rise to many smaller artery branches that carry blood throughout your head and neck, nourishing your organs and tissues.

Apr 30, 2022 · Your heart pumps oxygen-rich blood into the biggest artery in your body — your aorta. This branches off into parts that feed smaller and smaller arteries, eventually reaching your entire body.

Jun 2, 2025 · The main function of your coronary arteries is to supply your heart with blood. Your heart is a muscle that needs a constant flow of oxygen-rich blood to work properly.