MSN 610 Cardiac Questions 100% Solved!!

Describe the Cardiac Cycle - ANSWER· Blood enters the heart through the superior vena cava and the pulmonic veins. Atria builds up in pressure causing blood to go through ventricles via the tricuspid valve and mitral valve. · The closure of Tricuspid/mitral valves is s1, which is the start of systole. · As pressure builds up in the vetricles, blood is ejected via the aorta, and to the lungs. When the ventricles decrease in pressure, this causes the Aortic and pulmonic valves to close. · The closure of the Aortic and Pulmonic valves is S2. Describe the conduction system of the heart - ANSWERsinoatrial (SA) node (A), atrioventricular (AV) node (B), AV bundle (C), bundle branches (D), purkinje fibers (E) S1 - ANSWERclosure the Tricuspid and Mitral Valves; start of systole S2 - ANSWERclosure of the Aortic and Pulmonic Valves S1 is heard best at - ANSWERThe Apex of the heart (mitral area)/PMI S2 is heard best at - ANSWERBase of the Heart (top), aortic/pulmonic area Splitting - ANSWERvalves do not close in synchrony S3 - ANSWERheart just after S2;occurs with fluid volume over load, HF S4 - ANSWERoccurs just before S1; occurs when there is an extra kick needed to push blood through. occurs with HTN, CAD S3 an Describe the conduction system of the heart - ANSWERsinoatrial (SA) node (A), atrioventricular (AV) node (B), AV bundle (C), bundle branches (D), purkinje fibers (E)