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EMT Chapter 17

Cardiovascular Emergencies

TermDefinition
acute coronary syndrome (ACS) a group of signs and symptoms resulting from any of a variety of conditions that can affect the heart in which the coronary arteries are narrowed or occluded by fat deposits, clots, or spasm.
aorta (ay-OR-tah) the major artery from the heart.
arteriole (ar-TE-re-ol) the smallest branch of an artery, which at its distal end leads into a capillary.
Artery blood vessel that carries blood away from the heart.
atria (AY-tre-uh) the two upper chambers of the heart.
Automaticity the ability of cells within the cardiac conduction system to generate a cardiac impulse on their own.
blood pressure the force exerted by the blood on the interior walls of the blood vessels.
capillary (KAP-i-lair-e) tiny blood vessel that connects an arteriole to a venule.
cardiac compromise reduced heart function caused by any of a variety of conditions, diseases, or injuries affecting the heart.
cardiac conduction system the specialized contractile and conductive tissue of the heart that generates electrical impulses and causes the heart to beat.
circulatory system system composed of the heart and blood vessels that brings oxygen and nutrients to and takes wastes away from body cells.
coronary (KOR-o-nair-e) arteries blood vessels that supply the heart with blood
heart the muscular organ that contracts to force blood into circulation through the body.
Nitroglycerin medication that dilates the blood vessels, increasing blood flow through the coronary arteries and decreasing the workload of the heart
Perfusion the delivery of oxygen and other nutrients to the cells of all organ systems, which results from the constant adequate circulation of blood through the capillaries.
pulmonary artery artery that carries deoxygenated blood from the right ventricle of the heart to the lungs.
pulmonary vein vein that carries oxygenated blood from the lungs to the left atrium of the heart.
Vein vessel that carries blood toward the heart.
venae cavae the principal veins that carry deoxygenated blood to the heart.
Ventricles the two lower chambers of the heart.
Venule the smallest branch of a vein.
Created by: mlauhoff
 

 



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