Abstract

AbstractThe pattern of the coronary arteries of the domestic fowl is described. In the fowl heart the longitudinal sulci do not contain descending rami of the coronary arteries. The largest coronary vessels are the right and left deep coronary arteries, which early in their course come to lie on the ventral face of the I–V septum immediately below the endocardium. The circumflex arteries which occupy the corresponding coronary sulci are minor trunks. Differences in the relative distribution of me right and left deep coronary arteries allow recognition of three heart types: Heart Type Two, i.e., right coronary artery dominance, is found to be the commonest; Heart Type Three (left coronary artery dominance), and Heart Type One (balanced coronary circulation) are less common. Some details of the origin and course of the atrial, infundibular, conal and valvular arteries are given. The presence of homo‐coronary and intercoronary anastomoses is noted.

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