Electrical impulses make your heart beat, moving blood through these chambers. Your brain and nervous system direct your heart’s function. What is the function of the heart? Your heart’s main …

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 …

Oct 21, 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 …

Aug 22, 2024 · As the heart beats, it pumps blood through a system of blood vessels called the circulatory system. The vessels are elastic tubes that carry blood to every part of the body. Blood is …

May 22, 2025 · Common conditions that can affect the cardiovascular system include coronary artery disease, heart attack, high blood pressure, and stroke. This article explores the cardiovascular …

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 …

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

5 days ago · Cardiology : Welcome to theheart.org | Medscape Cardiology, where you can peruse the latest medical news, commentary from clinician experts, major conference coverage, full-text journal …

Jan 10, 2024 · Cardiovascular disease (CVD) can refer to many conditions: Heart and blood vessel disease, also called heart disease, includes numerous problems, many of which are related to …