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Left Coronary Artery | Atlas of Human Cardiac Anatomy A 2.5mm fibroscope was drawn back posterially through the left coronary artery back to the left coronary ostia in the sinus of Valsalva. The bifurcation of the left anterior descending and circumflex arteries can be seen.

Coronary Artery Ostia | Atlas of Human Cardiac Anatomy

Human heart: four figures. Engraving by Thomas Milton, 1814  From: ‘Human and animal anatomy: album containing a collection of engravings’