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 entire heart.

4 days ago · Heart Walk is the American Heart Association's premiere event for raising funds to help save lives from heart disease and stroke. Donate today to help end heart disease and stroke for …

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? The term "heart …

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 and on the artery …

Cardiovascular disease includes heart or blood vessel issues, including: Narrowing of the blood vessels in your heart, other organs or throughout your body. Heart and blood vessel problems present at …

Dec 6, 2025 · 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 receiving …

Read a description from the Cardiac Center at CHOP of how the normal heart works and get a basic understanding of its structure and function. The heart is a large muscular organ with the very …

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 the leading …

Memorial Cardiac & Vascular Institute in South Florida cares for a variety of heart conditions.

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 vessels can …