Jan 26, 2024 · 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? …

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 …

Jan 21, 2026 · 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 …

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 …

1. pertaining to the heart. 2. pertaining to the ostium cardiacum. cardiac arrest sudden and often unexpected stoppage of effective heart action.

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? …

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 …

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 …

Learn how comprehensive cardiac rehabilitation program coverage helps Medicare beneficiaries with heart valve repair, coronary artery bypass costs, more.

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 …