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Skip to main content. Home Heart. Heart explained. Actions for this page Listen Print. Summary Read the full fact sheet.
On this page. The four chambers of the heart The heartbeat Blood vessels of the heart Heart disorders Symptoms of heart disease Where to get help. The four chambers of the heart Your heart has a right and left side separated by a wall called the septum. The heartbeat Each atrium is connected to its ventricle by a one-way valve.
Blood vessels of the heart The blood vessels of the heart include: venae cavae — deoxygenated blood is delivered to the right atrium by these two veins. One superior vena cava carries blood from the head and upper torso, while the other inferior vena cava carries blood from the lower body pulmonary arteries — deoxygenated blood is pumped by the right ventricle into the pulmonary arteries that link to the lungs pulmonary veins — the pulmonary veins return oxygenated blood from the lungs to the left atrium of the heart aorta — this is the largest artery of the body, and it runs the length of the trunk.
Oxygenated blood is pumped into the aorta from the left ventricle. The aorta subdivides into various branches that deliver blood to the upper body, trunk and lower body coronary arteries — like any other organ or tissue, the heart needs oxygen. The coronary arteries that supply the heart are connected directly to the aorta, which carries a rich supply of oxygenated blood coronary veins — deoxygenated blood from heart muscle is 'dumped' by coronary veins directly into the right atrium.
Heart disorders Some disorders of the heart include: coronary heart disease — fatty deposits or plaques build up inside one or more of the coronary arteries atherosclerosis. Mayo Clinic is a nonprofit organization and proceeds from Web advertising help support our mission. Mayo Clinic does not endorse any of the third party products and services advertised.
A single copy of these materials may be reprinted for noncommercial personal use only. This content does not have an English version. This content does not have an Arabic version. See more conditions. Chambers and valves of the heart.
Products and services. Thank you for Subscribing Our Housecall e-newsletter will keep you up-to-date on the latest health information. Please try again. The two upper chambers are called the atria.
The right atrium and left atrium are separated by a wall of tissue called the atrial septum. The two lower chambers are called the ventricles, and are separated into the right and left ventricle by the ventricular septum.
The ventricles have thicker walls and pump blood to the lungs and body. The bundle branches are a part of the electrical system of the heart. The electrical system controls the heartbeat and….
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