Coronary Artery Anatomy

Left Coronary Artery Anatomy

1. Right coronary artery (RCA, proximal segment)

2. Right coronary artery (RCA, middle segment)

3. Right coronary artery (RCA, distal segment)

4. Posterior interventricular branch of right coronary artery

5. Left coronary artery (main stem)

6. Anterior interventricular branch of left coronary artery (LAD = RIVA, proximal segment)

7. Anterior interventricular branch of left coronary artery (LAD = RIVA, middle segment)

8. Anterior interventricular branch of left coronary artery (LAD = RIVA, distal segment)

9. First diagonal branch

10. (Second diagonal branch)

11. Circumflex branch of left coronary artery (LCX, proximal segment)

12. First marginal branch, M1

13. Circumflex branch of left coronary artery (LCX, middle segment)

14. (Second marginal branch, M2)

15. Circumflex branch of left coronary artery (LCX, distal segment)

16. Posterior left interventricular branch of right coronary artery

17. Intermediate atrial branch of right coronary artery

(Segments of coronary arteries are designated according to the classification of the American Heart Association; see Austen et al. 1975)

A Ascending aorta B Sinuatrial nodal branch C Conus branch

First Diagonal Artery HeartDiagonal Intermediate Artery

1. Left lung

2. Aortic arch

3. Pulmonary vein

4. Pulmonary artery

5. Left auricle

6. Left main bronchus

7. Left coronary artery

8. Esophagus

9. Ventricular myocardium (anterior basal segment)

10. Left atrioventricular (mitral) valve, anterior cusp

11. Ventricular myocardium (anterior medial segment)

12. Left atrium

13. Left ventricle

14. Coronary sinus

15. Ventricular myocardium (anterior apical segment)

16. Left atrioventricular valve (mitral valve), posterior cusp

17. Posterior papillary muscle

18. Descending aorta

19. Ventricular myocardium (inferior apical segment)

20. Ventricular myocardium (inferior basal segment)

21. Apex of heart

22. Ventricular myocardium (inferior medial segment)

Coronary vascularterritories

] Left anteriordescending artery(LAD) ] Rightcoronaryartery(RCA)

Septomarginal Trabecula Moderator BandSeptomarginal Trabecula Moderator Band

1. Right lung

2. Septomarginal trabecula (moderator band)

3. Right coronary artery

4. Apex of heart

5. Right ventricle

6. Interventricular septum (apical septal segment)

7. Tendinous cords

8. Interventricular septum (medial inferoseptal segment)

9. Right atrioventricular valve (tricuspid valve), anterior cusp

10. Ventricular myocardium (lateral apical segment)

11. Right atrium

12. Left ventricle

13. Right atrioventricular valve (tricus-pid valve), septal cusp

14. Ventricular myocardium (medial anterolateral segment)

15. Interventricular septum (basal inferoseptal segment)

16. Ventricular myocardium (basal anterolateral segment)

17. Atrioventricular septum

18. Left lung

19. Interatrial septum

20. Left coronary artery (circumflex branch)

21. Left atrioventricular valve (mitral valve), anterior cusp

22. Left pulmonary vein

23. Left atrium

24. Descending aorta

25. Right pulmonary vein

26. Left pulmonary artery

27. Left atrioventricular valve (mitral valve), posterior cusp

Coronaryvascularterrltorles

U Leftanteriordescending artery (LAD) ^ Rightcoronaryartery(RCA) | Leftcircumflexartery(LCX)

The Anterior Interventricular ArteryPicture Branches Bacteriology

1. Ventricular myocardium (anterior segment)

2. Ventricular myocardium (anterolateral segment)

3. Anterior interventricular branch of left coronary artery

4. Left lung

5. Interventricular septum (antero-septal segment)

6. Anterior papillary muscle

7. Right ventricle

8. Ventricular myocardium (infero-lateral segment)

9. Interventricular septum (infero-septal segment)

Coronary vascular territories

] Leftanteriordescending artery(LAD) U Rightcoronaryartery(RCA) | Leftcircumflexartery(LCX)

10. Left ventricle

11. Trabeculae carneae (in right ventricle)

12. Posterior papillary muscle

13. Epicardial fatty tissue

14. Ventricular myocardium (inferior segment)

15. Right lung

16. Posterior interventricular branch of right coronary artery

17. Liver

18. Stomach

Interventricular Septum LadRight Posterior Atrioventricular Segment

1. Right lung

2. Right ventricle

3. Ascending aorta

4. Interventricular septum (medial anteroseptal segment)

5. Aortic bulb

6. Interventricular septum (apical septal segment)

7. Interventricular septum (basal anteroseptal segment)

8. Left ventricle

9. Aortic valve, right semilunar cusp

10. Apex of heart

11. Aortic valve, left semilunar cusp

12. Tendinous cords

13. Right pulmonary vein

Coronary vascularterrltorles

^ Leftanteriordescending artery (LAD) | Leftcircumflexartery(LCX)

14. Papillary muscle

15. Atrioventricular septum

16. Ventricular myocardium (lateral apical segment)

17. Left atrium

18. Left lung

19. Left atrioventricular valve (mitral valve), anterior cusp

20. Ventricular myocardium (medial inferolateral segment)

21. Left atrioventricular valve (mitral valve), posterior cusp

22. Septum (basal inferoseptal segment)

23. Descending aorta

Descending Aorta AnatomyCoronary Artery Anatomy Posterior ViewAscending Aorta Anatomy

1. Right lung

2. Brachiocephalic trunk

3. Ascending aorta

4. Left lung

5. Aortic bulb

6. Pulmonary artery

7. Right atrium

8. Aortic valve

9. Atrioventricular septum

10. Ventricular myocardium (anterior segment)

11. Interventricular septum (antero-septal segment)

12. Ventricular myocardium (antero-lateral segment)

13. Interventricular septum (infero-septal segment)

14. Anterior papillary muscle

15. Right ventricle

16. Left ventricle

17. Right coronary artery

18. Ventricular myocardium (infero-lateral segment, base of heart)

19. Ventricular myocardium (inferior segment)

20. Posterior papillary muscle

Coronary vascular territories

] Left anteriordescending artery(LAD) ] Rightcoronaryartery(RCA) I Leftcircumflexartery(LCX)

Right Ventricle Septal Anatomy

Two-Chamber View of the Right Ventricle

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