EKG Anatomy and the ECG Unit Exam |Question and Answers| 100% Correct

EKG Anatomy and the ECG Unit Exam |Question and Answers| 100% Correct The stiffening of blood vessels due to fatty plaque buildup is called ____________. *Ans* atherosclerosis Where is the heart located? *Ans* In the left-side of the thoracic cavity What is the most common symptom of cardiac compromise? *Ans* Angina Which wave of the ECG cycle shows atrial depolarization? *Ans* P wave Which layer of the heart is made of muscle tissue and pumps the blood through the system? *Ans* Myocardium Which of these tissues is known as the body's "natural pacemaker?" *Ans* SA node Which layer of the heart contains a lubricating fluid that reduces friction as the heart beats? *Ans* Pericardium Which of the following are groups at high risk for cardiac emergencies that may appear with atypical symptoms? *Ans* Women, elderly, diabetics