Heart: Anatomy Function - Cleveland Clinic What is the heart? The heart is a fist-sized organ that pumps blood throughout your body It’s your circulatory system ’s main organ Muscle and tissue make up this powerhouse organ Your heart contains four muscular sections (chambers) that briefly hold blood before moving it
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 disease - Symptoms and causes - Mayo Clinic 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 walls usually causes coronary artery disease This buildup is called plaque
Heart | Structure, Function, Diagram, Anatomy, Facts | Britannica 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 chambers (atria) and a main pumping chamber (ventricle), as in mollusks
What Is Cardiovascular Disease? | American Heart Association 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 atherosclerosis Atherosclerosis develops when a substance called plaque builds up in the walls of the arteries
How the Heart Works - What the Heart Looks Like | NHLBI, NIH Your heart is in the center of your chest, near your lungs It has four hollow chambers surrounded by muscle and other heart tissue The chambers are separated by heart valves, which make sure that the blood keeps flowing in the right direction Read more about heart valves and how they help blood flow through the heart Anatomy of the interior of the heart This image shows the four chambers
Cardiovascular system: Function, organs, conditions, and more 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
ACLS Rhythm Strips Training and Interpretation Rhythm Recognition Knowing how to read and interpret ECGs is a critically important skill in ACLS and PALS Take a moment to review the most common cardiac rhythms encountered in PALS and ACLS certification training The Prototypical ECG Tracing The P wave corresponds to electrical impulse traveling through the atria This is synonymous with atrial depolarization and usually corresponds with