CRAT questions with correct answers

1. Occurs when a patient has a very low potassium level Answer U Wave 2. What complex occurs when the ventricles contract? Answer QRS Complex 3. The heart has ___ valves? Answer Four 4. The two semilunar valves are? Answer Pulmonary and aortic valves 5. Blood returning from the body to the heart enters the? Answer Right Atrium 6. The _____ vena cava gets it's blood from the head neck and upper extremities Answer Superior 7. The _____ is the innermost layer of the heart Answer Endocardium 8. _____ ______ ________ is a Condition when the heart cannot meet the demands of the body Answer Congestive heart failure 9. The two entrance valves of the heart. Answer Tricuspid and bicuspid valves 10. ______ is the fibrous outer fluid filled layer that covers the heart and separates it from the contents in the chest cavity Answer Pericardium The EKG records the electrical impulses is called? Answer Cardiac cycle