Coronary Arteries in Pigs ( Sus Scrofa Dom.)- Deep Myocardial Collaterals of Coronary Arteries

Abstract

Pig’s heart could be used for conducting experiments on coronary arteries. As far as the coronary blood supplyis the heart of the pig was similar to that of man with small differences. The bibliografic data are illuminating taking into consideration the multiple origin variations of the coronary arteries (Edward-Luisada-Hollishead-Klein, quoted by Pop D. Popa, 1982), and then the observations concerning the representation of the percentage of different origin’ versions of the cardiac vessels (Wernaeky quoted by Agneoletti et al., 2005), anatomical particularities of the cardiac vessels in human (Pop D. Popa, 1982).The study has been conducted on a total of seven hearts harvested from adult pigs, common breads, slaughtered for economic purposes by exsanguination, considered clinically healthy. The orifices of the heart arteries – coronary left and right were found after opening the aortic bulb. The product PALUX colored with red pigment was injected in the arterial lumen. Segmental photos were taken during the dissection of the vascular tracks.The left coronary artery in the initial trajectory segment releases deep collaterals for the left atrium and pulmonary arterial trunk. The paraconal terminal releases numerous deep collaterals which particularly irrigate the front of the adjacent right ventricle. The circumflex terminal releases left arterial dorsal deep collaterals, and the deep branches emerge from the intermediate arteries. The right coronary artery releases numerous fine dorsal branches, which penetrate the walls of the right atrium. The right ventricular deep collaterals are released from the superficial ventricular arteries.In addition to the deep collaterals of the superficial cardiac arteries, also the paraconal artery, the circumflex artery and the right coronary artery release deep direct collaterals for the myocardium and the atrioventricular papillary formations.