1. Lab 5-3 Heart

2. Pericardiacophrenic Vessels Off what vessels do they branch from? Veins: Drain into R/L Brachiocephalic vv Arteries: Branch from R/L Internal thoracic aa

3. Fibrous Pericardium

4. Parietal Layer

5. Visceral Layer

6. Clinical Correlates Accumulation of fluid within the pericardial sac is… Pericardial effusion The excess fluid compresses the heart and causes biventricular failure aka… Cardiac tamponade

7. Transverse pericardial sinus

8. Oblique Pericardial Sinus

9. Apex

10. Base What makes up the base? – L atrium – Sm. Portion of R atrium – Proximal parts of the great viens

11. Right Atrium

12. Right Ventricle

13. Left Atrium

14. Left Ventricle

15. Orientation of Heart Which chamber has the largest diaphragmatic contact? Right Ventricle

16. Crista Terminalis

17. Sinus Venarum What empties blood into this space? Superior and Inferior Venae cavae

18. Pectinate Muscles

19. Fossa Ovalis What was this depression during embryonic development? Foramen ovale It’s function? Oxygenated blood from R atrium to L atrium so it can bypass the lungs

20. Opening of the Coronary Sinus Any guesses what veins will empty into here? Great, Middle, and Small Cardiac Veins

21. Tricuspid Valve

22. Pulmonary Valve

23. Mitral Valve

24. Chordae Tendineae

25. Trabeculae Carnae What are the trabeculae Carnae that have one end attached to the ventricular surface and the other end attached to the chordae tendinae called? Papillary Muscles

27. How many in right ventricle vs left? Right Ventricle: Anterior, Posterior, and Septal (sometimes small or even absent) Left Ventricle: Only Anterior and Posterior

28. Conus Arteriosis

29. Membrane Interventricular Septum

30. Muscular Interventricular Septum

31. Septomarginal Trabeculum What is it and what’s its function? A band of myocardium that connects the interventricular septum and the anterior papillary muscle Carries a portion of the cardiac conduction system-the right bundle branch-to the anterior wall of the right ventricle

32. Conduction System: Right Bundle Branch

33. Conduction System: Left Bundle Branch

34. Right Coronary a.

35. Right Marginal a. What does it supply? Right Ventricle

36. Right Atrial aa. Which one is the SA nodal artery? The artery which passes posteriorly between the aorta and superior vena cava

37. Right Posterior ventricular a

38. AV Nodal a

39. Left Coronary

40. Anterior interventricular a

41. Anterior Interventricular a (posterior view) What does it supply? R and L ventricles and interventricular septum Clinical name? Left anterior descending artery (LAD)

42. Left Marginal a

43. Circumflex branch of Left Coronary a Supply? Left atrium and Left ventricle Name the 2 descending branches.. (More Superior) = Lt. posterior ventricular a (Inferior branch) = Posterior interventricular a

44. Posterior interventricular a Which coronary artery does this most commonly originate from (right or left)? Right However, AP decided to use a Left coronary a. dominant pattern =supplying most of the posterior wall

45. Coronary Sinus

46. Small Cardiac v

47. Middle Cardiac v

48. Great Cardiac v

49. Anterior Cardiac vv (Right and Left)

50. CT Imaging Right ventricle Ascending aorta Pulmonary vv Descending aorta

51. CT imaging Right Coronary Artery Right Atrium Left Coronary Artery