1. Cardiovascular System My Achin Heart

2. I. Functions A. Circulate important materials – 1. oxygen – 2. wastes – 3. endocrine hormones – 4. glucose B. Help regulate body temperature C. Help control pH D. Combat pathogens

3. II. Terminology A. Artery B. Vein C. Atrium D. Ventricle E. Pulmonary circuit F. Systemic circuit G. Heart membranes

4. III. Gross Anatomy of Heart A. SVC & IVC B. Right atrium C. Tricuspid valve D. Right ventricle E. Pulmonary artery F. Pulmonary veins G. Left atrium H. Bicuspid valve I. Left ventricle J. Aortic arch

5. Labeled diagram of the heart

6. IV. Valves and one-way flow A. Atrioventricular valves – 1. chordae tendonae – 2. bicuspid – 3. tricuspid B. Semilunar valves – 1. Pulmonary semilunar – 2. aortic semilunar

7. C. Valve problems 1. rheumatic fever -untreated strep infection -immune system attacts heart valve -becomes stiff and does not meet in the middle

8. 2. Prolapsed valve a. Normal valve b. Mitral valve normal culprit

9. 3. Valve stenosis a. Calcification b. regurgitation

10. VI. Coronary Circulation A. Heart muscle nutrition B. Coronary atreries C. Coronary veins

11. D. Coronary artery disease 1. Atherosclerosis 2. Stents 3. Bypass surgery 4. Infarct

12. VII. Excitation-Contraction Coupling A. Intrinsic conduction system of the heart. – 1. SA Node – 2. AV Node – 3. Bundle of His – 4. Bundle branch – 5. Purkinje fibers

13. B. Cardiac cycle 1. systole 2. diastole

14. C. Heart Sounds 1.Door opening vs closing 2.Lub 3.Dup 4.Heart murmurs

15. D. ECG Tracing 1. P wave 2. QRS complex 3. T wave 4. Abnormalities

16. VIII. Cardiac output A. Cardiac output = stroke volume X heart rate B. Stroke volume – 1. 60% – 2. Starling’s law of the heart – 3. venous return C.Heart Rate 1. ANS control 2. Hormonal control