Dec 6, 2025 · Heart, organ that serves as a pump to circulate the blood. It may be as simple as a straight tube, as in spiders and annelid worms, or as complex as the four-chambered double pump …

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.

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 …

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 …

3 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 …

Sep 19, 2025 · Heart disease can lead to a heart attack, heart failure, cardiac arrest, stroke and organ damage. Healthy habits, medicines and procedures can prevent or treat CAD and other heart diseases.

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 …

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

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 failure, and arrhythmia.

CARDIAC definition: 1. of the heart or heart disease: 2. a cardiac arrest (= a heart attack): 3. of the heart or…. Learn more.