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68WM6 Cardiac

68WM6 10-10 Cardiac System

QuestionAnswer
Aorta The major systemic artery that receives blood from the left ventricle
Arteriole A small branch of an artery that communicates with a capillary network
Artery Thick-walled elastic vessels that always carry blood away from the heart
Atrium Chamber of the heart that receives blood
Capillary A small blood vessel that connects an arteriole and a venule
Cardiac cycle A series of myocardial contractions and relaxations that constitute a complete heartbeat
Cardiac output The volume of blood per minute that the heart pumps
Diastole Phase of the cardiac cycle when a heart chamber wall relaxes
Electrical event The electrical conduction of the heart as visualized on the EKG
Endocardium Inner lining of the heart chambers
Epicardium The visceral portion of the pericardium on the surface of the heart
Ischemia Deficiency of blood in a body part
Mechanical Event The muscular contraction of the heart that sends blood out of the heart
Mitral valve Heart valve between left atrium and left ventricle also known as the bicuspid valve
Myocardium Muscle tissue of the heart
Myocardial Infarction A MI is the irreversible necrosis of heart muscle secondary to prolonged ischemia
Pacemaker Mass of specialized muscle tissue that controls the rhythm of the heartbeat,Sinoatrial node,Atrioventricular node
Stroke volume The volume of blood that each ventricle discharges in a heartbeat
Systole The phase of the cardiac cycle when a heart chamber wall contracts
Systemic circulation Involves movement of blood from the left ventricle throughout the body and back to the right atrium
Vasoconstriction A decrease in the diameter of a blood vessel
Vasodilatation An increase in the diameter of a blood vessel
Vein A vessel that carries blood toward the heart
Vena Cava The large vein that conveys deoxygenated blood to the right atrium
Ventricle Chamber of the heart that contract to send blood the lungs and body
Created by: egolden12