which arrhythma refers to rapid, random, inefficient, and irregular contrations of the atria and ventricles(350 beats or more per minute) 1. Flutter 2. Bradycardia 3. Fibrillation

The coronary sinus can be found on the posterior aspect of the of the heart. O right atrium right ventricle left ventricle O left atrium

Which of the following statements is correct regarding the cardiac conduction system: A the AV node is the natural pacemaker B C D internodal fibers conduct signals to the atrial myocardial cells to contract the R/L bundle branches are located in the interatrial septum the bundle of His sends a signal to the papillary muscles to contract

A 60-year-old woman receives a coronary angiogram following a myocardial infarction in order to evaluate the condition of her coronary circulation. Most blood draining from the heart wall (myocardium) will return to the heart through which of the following structures? Coronary sinus Superior vena cava Ascending aorta Pulmonary veins Inferior vena cava

What is the tissue type for the following structures of the heart Fibrous pericardium Serous pericardium Myocardium Endocardium Right atrium right Ventricle Left Atrium  Left Ventricle Auricles  Papillary muscles Fossa Ovalis Pectinate Muscles Chordae Tendinae  Interventricular septum Tricuspid, pulmonary, Bicuspid, mitral, and Aortic semilunar valves pulmonary trunk Pulmonary artery Aorta Arteries Sinus/veins

Can you help with number 12   This is not and will not be graded

On an ECG, if every other P wave (e.g., every even is, and every odd is not) is NOT followed by the QRS complex, this is:    A. first degree AV block  B. second degree AV block  C. third degree AV block  D. atrial fibrillation

The atrioventricular valve on the same side of the heart as the origin of the aorta is the _____ valve.   A aortic semilunar   B tricuspid   C bicuspid   D pulmoary semilunar

Which of the following is true regarding the P wave? Group of answer choices It represents the depolarization of the ventricles It represents the depolarization of the SA node It represents the depolarization of the atria It is the largest wave in an ECG complex

Which of the following is true of the EKG?   A. Depolarization of the atria cannot be seen on the EKG B. Repolarization of the atria cannot be seen on the EKG. C. Depolorization of the ventricles cannot be seen on the EKG. D. Repolorazition of the ventricles cannot be seen on the EKG.