EKG practice test Solved 100% Correct

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