Figure 29

Diagram showing normal aortic origin and initial distribution of four major coronary arteries: left anterior descending (LAD), left circumflex (LC), left main (LM), and right (R). AV= aortic valve; NC= noncoronary; P= posterior.

B.F. Waller and R.C. Schlant: Anatomy of the Heart: Hurst's The Heart, 8th ed, p 86.