nurs 1014 midterm 2 Exam With Complete Answers

nurs 1014 midterm 2 Exam With Complete Answers Heart position - Correct Answer right side is anterior and left side is posterior Pericardium - Correct Answer tough, fibrous, double-walled sac that surrounds and protects the heart. It also provides smooth friction-free movement of the heart muscle Myocardium - Correct Answer muscular of the heart, does the pumping Endocardium - Correct Answer the thin layer of endothelial tissue that lines the inner surface of the heart chambers and valves Atrioventricular (AV) valves - Correct Answer separate atria and ventricles, tricuspid on the right, mitral on the left Semilunar valves - Correct Answer pulmonic valve on the right side and aortic on the left Direction of bloodflow - Correct Answer -enters via inferior/superior vena cava -right atrium -tricuspid valve -right ventricle -pulmonic valve -pulmonary artery -lungs-pulmonary veins -left atrium -mitral valve -left ventricle -aortic valve -aorta Cardiac cycle - Correct Answer rhythmic movement of blood flow through the heart 2 phases of the cardiac cycle - Correct Answer systole & diastole Diastole - Correct Answer ventricles relax and fill with blood (⅔ of the cardiac cycle), AV valves are open Systole - Correct Answer hearts contraction (⅓ of cycle), AV valves are closed Isometric contraction - Correct Answer all 4 heart valves are closed and the ventricles relax S1 - Correct Answer occurs with closure of the AV valves, loudest at the apex, start of systole or "lub" M1 and T1 - Correct Answer mitral and tricupid component, sound is usually fused S2 - Correct Answer occurs with the closure of the semilunar valves, loudest at the base (end of systole) A2 and P2 - Correct Answer aortic and pulmonic components, this sound is usually fused