EKG Practice Test Free Trial Advertisements Welcome to your EKG Practice Test Free TrialST-segment depression indicates: Ventricular hypertrophy SubEpicardial Ischemia Coronaray artery block SubEndicardial type of Myocardial ischemia Using the 6 sec tracing above, choose the best answer that describes the rhythm. Atrial flutter Atrial fibrillation Ventricular fibrillation Atrial Tachycardia The major blood vessel that receives blood from the head and upper extremities and transports it to the heart is the: Pulmonary artery Superior vena cava Inferior vena cava Aorta The course of blood flow through the heart and lungs is referred to as: Pulmonary circulation Systemic circulation Mesenteric circulation Aortic circulation. Time is Up! Time's upAdvertisements Leave a Reply Cancel replyCommentEnter your name or username to commentEnter your email address to commentEnter your website URL (optional) Save my name, email, and website in this browser for the next time I comment.