ABSTRACT
Background: Coronary artery disease also called asischemic heart disease which develops when majorblood vessels that supply blood to heart becomedamaged or diseased. It is also one of the leading causesof death. Morphometry and elastic fibre distribution incoronary arteries may help in using appropriate sizecatheters for diagnostic procedures. Aim andObjectives: To study the morphometry and elastic fibredistribution in left and right coronary artery. Materialand Methods: Segment of left and right coronaryarteries each having length of 0.5 cm were collectedfrom 30 adult human heart specimens fixed in 10%formalin. Outer and inner diameters were measured.Tissues were processed and stained by verhoeff's VanGeison stain. Stained slides were scanned by “IScapture software” under 10 × magnifications. Results:Outer diameter of left coronary artery is 4.225 ±0.6963mm and right coronary artery is 3.827 ±0.6869mm. Inner diameter of left coronary artery is3.338 ± 0.5853 and that of right coronary is 2.869 ±0.6104mm.Conclusion: Diameter, wall thickness,thickness of tunica intima, tunica media is more in leftcoronary artery than the right. Also left coronary arteryshows more number of elastic fibers than right coronaryartery.