EKG PRACTICE EXAM QUESTIONS AND ANSWERS

EKG PRACTICE EXAM QUESTIONS AND ANSWERS What is the heart? - ANSWER- The muscle responsible for the process by which blood is pumped throughout the body. Pericardium - ANSWER- The layer or sac that surrounds the heart. Myocardium - ANSWER- The middle layer of heart muscle. Endocardium - ANSWER- The innermost layer of heart muscle. Epicardium - ANSWER- The top layer of heart muscle. Conduction System of the Heart - ANSWER- The system responsible for the regulation of the pumping action of the heart, as well as the conduction of the electrical impulses that causes the myocardium to contract. Conduction system pathway - ANSWER- Sinoatrial (SA) node, atrioventricular (AV) node, Bundle of His, right and left bundle branches, purkinje fibers Myocardial infarction - ANSWER- Commonly known as a heart attack, is a term that refers to an obstruction to the myocardial tissue. This obstruction causes an interruption of the blood supply to part of the heart which causes the heart cells to die. Myocardial ischemia - ANSWER- Also known as angina, is a condition caused by a lack of oxygen-rich blood in the heart. Arrhythmia - ANSWER- A term used to refer to any disorder of your heart rate or rhythm.