
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 entire heart.
Heart | Structure, Function, Diagram, Anatomy, & Facts | Britannica
May 13, 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 receiving …
Heart and Vascular | Nebraska Heart Disease Services
We have over 80 specialists who are experts in various areas of the heart and vascular system, including: Using the latest technology, we can diagnose and manage common to complex heart and …
Heart: Anatomy & Function - Cleveland Clinic
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 …
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 and on the artery …
Cardiovascular Disease: Types, Causes & Symptoms
Sep 1, 2022 · 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 …
What Does Cardiac Mean? Understanding the Definition, Function, and ...
Mar 20, 2025 · To define cardiac, it is essential to understand its connection to the heart and overall cardiovascular health. Derived from the Greek word “kardia,” meaning heart, the term is used to …
CARDIAC Definition & Meaning - Merriam-Webster
4 days ago · The meaning of CARDIAC is of, relating to, situated near, or acting on the heart. How to use cardiac in a sentence.
Heart & Cardiovascular & Cardiothoracic Surgery | Omaha, NE
Nebraska Medicine is a leader in cardiac surgery, providing the most advanced, complex and life-saving surgical treatments for patients with heart and vascular disease.
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 failure, and arrhythmia.