EKG Practice Test Questions & Answers Correct 100%

What is the force the heart has to push against? - Answer Afterload What is the point of the heart that points inferiorly toward the left hip? - Answer apex of the heart The top chambers of the heart that are separated by interatrial septum are called? - Answer atria This is located b/t the atria and ventricles - Answer Atrioventricular valve AKA: AV valve The valves of the heart are..... - Answer flaps of fibrous tissue firmly anchored to the Anuli fibrosi Cordis. Prevent backflow. What is valve b/t the right atrium and right ventricle? - Answer Tricuspid valve What is the valve b/t the left atrium and left ventricle? - Answer Bicuspid/ Mitral valve What do you call the broad flat part of the heart that points toward the right shoulder? - Answer base of the heart The amount of blood the heart pumps in 1 min is called? and what is its normal? - Answer Cardiac Output 4-8 L These are tendens that hold the AV valve in place so it prevents it from swinging upward into the atria.... - Answer Chordae Tendineae This drug effect on the heart will change the heart rate? - Answer Chronotropic effect A drug that has chronotropic effects can be _______ or ________? - Answer positive or negative A positive chronotropic drug effect will _____ hr? - Answer increase A negative chronotropic drug effect will _____ hr? - Answer decrease This is the resting phase of the heart? - Answer Diastole What is the inner most layer of the heart called? It is continous with the inner layer of blood vessels. - Answer endocardium What is the outer most layer of the heart called? Its the outer surface and great vessels. - Answer Epicardium What drug effect effects the strength of the contractions of the heart? - Answer inotropic effect A positive inotropic effect increases _______ of heart. - Answer strength A negative ______ effect decreases strength of heart. - Answer inotropic What is the middle muscle layer of the heart? It consists of bands of muscle fibers that contract creating the pumplike action needed to pump blood through. - Answer Myocardium This is the outer covering layer? A double wall sac around the heart. - Answer Pericardium The primary Function of the Pericardium is to? - Answer PROTECT the heart ANCHOR heart to structures PREVENT heart from overfilling Refers to the defree that the myocardial fiver is stretched prior to contraction. also related to volume, when the heart chambers fill with blood? - Answer Preload Where is the preload best measured at? - Answer vena cava You have two semilunar valves what are they called? - Answer Pulmonary semilunar and Aortic semilunar The pulmonary semilunar valve is the ______ tract of the right ventricle? - Answer outflow The aortic semilunar valve is the outflow tract of the the ____ ventricle? - Answer left During _____ phase the semilunar valves prevent back flow of blood into the ventricles? - Answer Diastole During ______ phase the pulmonary pumps blood to the ______? - Answer Systole lungs During systole phase the aortic valve pumps blood to _____? - Answer Aorta What is the volume of blood ejected by the left ventricle during each contraction or systole? - Answer Stroke Volume What is the stroke volume Equation? - Answer SV=CO/HR