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68WM6 Cardiac
68WM6 10-10 Cardiac System
Question | Answer |
---|---|
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 |