Figure 104c

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.

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