|Abnormal bulging of a blood vessel in the heart due to weakness in the vessel wall, posing a risk of rupture and internal bleeding.
|The main artery of the body that distributes oxygenated blood to all parts of the body from the left ventricle.
|A valve between the left ventricle and the aorta that prevents backflow of blood into the left ventricle.
|The electrical activation that leads to atrial contraction, represented by the P wave on an electrocardiogram (ECG).
|A heart arrhythmia characterized by an irregular and often rapid heart rate, reflected in a distinct ECG pattern.
|Upper chambers of the heart; the right atrium receives deoxygenated blood from the body, and the left atrium receives oxygenated blood from the lungs.
|Also known as the mitral valve; it allows blood flow from the left atrium to the left ventricle and prevents backflow.
|Arteries that supply blood to the heart muscle itself.
|Phase of the cardiac cycle when the heart muscles relax and the chambers fill with blood; the tricuspid and bicuspid (mitral) valves are open, while the pulmonary and aortic valves are closed.
|Electrocardiogram, a tracing representing the electrical events during a heartbeat.
|Inferior Vena Cava
|A large vein carrying deoxygenated blood from the lower body back to the right atrium of the heart.
|A chamber of the heart that pumps oxygenated blood into the aorta for systemic circulation.
|A valve that allows blood flow from the left atrium to the left ventricle and prevents backflow, also known as the bicuspid valve.
|Often referred to as a heart attack; occurs when a blockage in a coronary artery prevents blood from reaching a section of the heart muscle, causing tissue damage or death.
|The artery carrying deoxygenated blood from the right ventricle to the lungs for oxygenation.
|A valve located between the right ventricle and the pulmonary artery that prevents backflow of blood into the right ventricle.
|Veins that carry oxygenated blood from the lungs back to the left atrium of the heart.
|A chamber of the heart that pumps deoxygenated blood to the lungs through the pulmonary artery.
|Superior Vena Cava
|A large vein carrying deoxygenated blood from the head, neck, and upper limbs back to the right atrium of the heart.
|Phase of the cardiac cycle when the heart muscles contract, propelling blood out of the heart; the tricuspid and bicuspid valves are closed to prevent backflow into the atria, while the pulmonary and aortic valves are open.
|A valve that allows blood flow from the right atrium to the right ventricle and prevents backflow.
|The electrical event that triggers ventricular contraction, represented by the QRS complex on an ECG.
|The process allowing the ventricles to relax, represented by the T wave on an ECG.