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  1. Heart - Wikipedia

    Cardiac muscle tissue has autorhythmicity, the unique ability to initiate a cardiac action potential at a fixed rate—spreading the impulse rapidly from cell to cell to trigger the contraction of the …

  2. Cardiovascular Disease: Types, Causes & Symptoms

    Cardiac magnetic resonance imaging (MRI) uses magnets and radio waves to create highly detailed images of your heart. MR angiogram or CT angiogram uses an MRI or CT, …

  3. Heart disease - Symptoms and causes - Mayo Clinic

    Aug 13, 2024 · Coronary artery disease is a common heart condition that affects the major blood vessels that supply the heart muscle. A buildup of fats, cholesterol and other substances in …

  4. About Heart Disease | Heart Disease | CDC

    May 15, 2024 · High blood pressure, high blood cholesterol, and smoking are key risk factors. 1 out of every 5 deaths in the United States are due to heart disease. What is heart disease? …

  5. Heart | Structure, Function, Diagram, Anatomy, & Facts | Britannica

    4 days ago · heart, organ that serves as a pump to circulate the blood. It may be a straight tube, as in spiders and annelid worms, or a somewhat more elaborate structure with one or more …

  6. CARDIAC Definition & Meaning - Merriam-Webster

    The meaning of CARDIAC is of, relating to, situated near, or acting on the heart. How to use cardiac in a sentence.

  7. Cardiovascular system: Function, organs, conditions, and more

    May 22, 2025 · The cardiac cycle consists of two phases: systole (contraction) and diastole (relaxation). Some conditions that can affect the heart include heart attack, stroke, heart …

  8. MercyOne Iowa Heart Center

    Our board-certified cardiologists, interventional cardiologists, electrophysiologists and cardiac and vascular surgeons work together to deliver personalized treatment plans using the latest …

  9. Cardiovascular (Heart) Diseases: Types and Treatments - WebMD

    Oct 29, 2024 · Cardiovascular disease is a group of conditions that affect your heart and blood vessels. It's sometimes also called heart disease. Conditions that affect your heart and blood …

  10. Heart Disease | MedlinePlus

    Mar 20, 2025 · Heart disease is a general term that includes many types of heart problems. It's a type of cardiovascular disease, which means heart and blood vessel disease. Heart disease is …