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Med term chap 5

TermDefinition
Cardiopulmonary Pertaining to the heart and lungs
Cardiothoracic Pertaining to the heart and thoracic cavity
Cardiovascular system body system that includes the heart and the blood vessels (vascular structures)
Circulatory system Circular route that the blood takes as it moves through the body.
mediastinum Irregularly shaped, central area in the thoracic cavity that lies between the lungs.
Pulmonary circulation The arteries, arterioles, capillaries, venules, and veins going to. within, and coming from the lungs
Systemic circulation The arteries, arterioles, capillaries, venules, and veins everywhere in the body, except in the lungs
Aortic valve heart valve between the left ventricle and the aorta
Atrium Each of the two upper chambers of the heart
Chordae tendineae Ropelike strands that support the tricuspid and mitral valves and keep their leaflets tightly closed when the ventricles are contracting
Ductus arteriosus Temporary, small blood vessel in the fetal heart that connects the pulmonary trunk to the aorta.
Endocardium Layer of cells that lines the atria, ventricle, and valves of the heart
Foramen ovale Temporary, oval shaped opening in the interatrial septum of the fetal heart
Heart organ that pumps blood throughout the body
Mitral valve Heart valve between the left atrium and the left ventricle
Myocardium Muscular layer of the heart
Pericardium Membrane that surrounds the heart as the pericardial sac and is filled with pericardial fluid
Pulmonary valve Heart valve between the right ventricle and the pulmonary trunk and pulmonary arteries
Tricuspid valve Heart valve between the right atrium and right ventricle.
Valve Structure that opens and closes to control the flow of blood.
Ventricle Each of the two large, lower chambers of the heart
Atrioventricular (AV) node small area of tissue between the right atrium and right ventricle.
Bundle branches Part of the conduction system of the heart after the bundle of His
Bundle of His Part of the conduction system of the heart after the AV node
Conduction system System that carries the electrical impulse that makes the heart beat
Depolarization To begin a contraction of the heart, an impulse from the SA node changes the permeability of the myocardial cell membrane.
Diastole Resting period between contractions
Ectopic site Area within the heart that can produce its own electrical impulse but is not part of the conduction system
Refractory Period Short period of time when the myocardium is unresponsive to electrical impulses
Repolarization To end a contraction of the heart, positive potassium ions diffuse out of the cell, while molecular pumps move positive sodium and some calcium ions out of the cell and move the rest of the calcium ions into storage within the cell
Sinoatrial node Pacemaker of the heart
Systole Contraction of the atria or the ventricles
Aorta Largest artery. It carries oxygenated blood from the left ventricle to the body
Arteriole Smallest branch of an artery
Artery Blood vessel that carries oxygenated blood away from the heart to the body
Axillary artery Artery that carries oxygenated blood to the axilla ( Armpit) area
Blood vessels Large and small channels through which the blood circulates throughout the body
Brachial artery Artery that carries oxygenated blood to the upper arm
Capillary Smallest blood vessel in the body
Carotid artery Artery that carries oxygenated blood to the myocardium (heart muscle)
Endothelium Layer of cells that lines the wall of a blood vessel
Femoral artery Artery that carries oxygenated blood to the upper leg
Great vessels Collective phrase for the aorta, the superior and inferior vena cavae, and the pulmonary trunk, pulmonary arteries, and pulmonary veins
Iliac artery Artery that carries oxygenated blood to the hip and groin area
Jugular vein Vein that carries blood from the head to the superior vena cava
Peroneal artery Artery that carries oxygenated blood to the little toe side of the lower leg
Popliteal
Created by: Nemo2018
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