cardiac anatomy

cardiac anatomy PowerPoint PPT Presentation


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Mediastinum. Mediastinum. SuperiorAbove plane between sternal angle and inferior border of T4 vertebral bodyInferiorAnteriorMiddlePosterior. Pericardium. PericardiumFibrousSerousParietal layerVisceral layerPhrenic Nerves. . . . . . . . . . . . . . Serous Pericardium (Visceral Layer) (Epicardium).

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cardiac anatomy

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1. Cardiac Anatomy Great Website: http://info.med.yale.edu/intmed/cardio/imaging/contents.html

5. Mediastinum

6. Mediastinum Superior Above plane between sternal angle and inferior border of T4 vertebral body Inferior Anterior Middle Posterior Diaphragm to thoracic inlet. Sternum to thoracic vertebrae. Superior separated from inferior by imaginary line from sternal angle to lower border of body of T4. Inferior mediastinum Middle pericardium + heart Anterior space between pericardium and sternum Posterior pericardium and vertebrae Inf med contains: thymus, heart, pericardium, phrenic nerves, esophagus, thoracic duct, descending aorta, sympathetic trunksDiaphragm to thoracic inlet. Sternum to thoracic vertebrae. Superior separated from inferior by imaginary line from sternal angle to lower border of body of T4. Inferior mediastinum Middle pericardium + heart Anterior space between pericardium and sternum Posterior pericardium and vertebrae Inf med contains: thymus, heart, pericardium, phrenic nerves, esophagus, thoracic duct, descending aorta, sympathetic trunks

8. Pericardium Pericardium Fibrous Serous Parietal layer Visceral layer Phrenic Nerves

11. Pericardium

13. Innervation of Heart Sympathetic Nervous System T1-T4 “Cardiac accelerators” Stellate ganglia (cervicothoracic ganglia) and middle cervical ganglia Distributed throughout the heart Cervical sympathetic nervous system is a continuation of the thoracic sympathetic trunk. Middle cervical ganglion Fusion of inferior cervical ganglion + 1st thoracic ganglion Stellate ganglion T1-4 innervation cardiac accelerators Parasympathetic innervation Vagus nervesCervical sympathetic nervous system is a continuation of the thoracic sympathetic trunk. Middle cervical ganglion Fusion of inferior cervical ganglion + 1st thoracic ganglion Stellate ganglion T1-4 innervation cardiac accelerators Parasympathetic innervation Vagus nerves

14. Innervation of Heart Parasympathetic Originate in medulla oblongata Vagus nerves Much innervation to SA and AV nodes Little innervation to ventricles

16. Conduction System Sinoatrial Node Interatrial conduction pathways (SA to LA) Internodal conduction pathways (SA to AV) Atrioventricular Node Bundle of His Bundle Branches Left Bundle Branch Left anterior division Left posterior division Right Bundle Branch

17. AV Conduction AV node is situated on the right side of interatrial septum near the ostium of the coronary sinus

18. Conduction System

20. Cardiac Chambers Right Atrium Left Atrium Right Ventricle Left Ventricle

23. Right Atrium Vena Cavae Superior Inferior Eustachian valve Crista terminalis (divides right atrium) Right atrial appendage (right auricle) Trabeculated Smooth portion of atrium around vena cavae Coronary Sinus (venous drainage of heart) Fossa Ovalis Remnant of foramen ovale Tricuspid Valve

25. Base and Diaphragmatic Surfaces of Heart

26. Right Ventricle Coarsely trabeculated inlet Smooth outlet Right ventricular outflow tract (RVOT)

28. Ventricles

29. Left Atrium Pulmonary veins (4) Left atrial appendage

31. Left Ventricle Thick Wall Anterior and Posterior Papillary Muscles

32. Ventricles

34. Cardiac Anatomy

35. Aortic Valve Separates left ventricle and aorta Located between (and on the same plane as) the Mitral and Tricuspid valves Trileaflet (3 leaflets) Right and Left Main Coronary Arteries originate in sinuses behind valve leaflets Sino-tubular junction

36. Aortic Valve

37. Cardiac Anatomy

38. Aortic Valve

39. Mitral Valve Separates Left atrium from Left Ventricle Two leaflets Anterior Leaflet Wide and short Posterior Leaflet Narrow and long Papillary muscles Chordae tendinae

40. Mitral Valve

41. Papillary Muscles

42. Tricuspid Valve Separates Right atrium from Right ventricle 3 Leaflets Anterior leaflet Posterior leaflet Septal leaflet

44. Pulmonary Valve Separates Right Ventricle from Pulmonary artery 3 Cusps Sinuses of Valsalva Located behind the valve cusps

46. Coronary Arteries Right Coronary Dominance: In 85% of individuals the RCA supplies the posterior descending artery (PDA) Left Coronary Left anterior descending (LAD) Diagonal Left circumflex Obtuse marginal Ramus intermedius (37%)

50. Myocardial Segment Anatomy

51. Cardiac Anatomy With Corresponding Echo Views

57. The End

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