Morphological and metric studies of coronary arteries in Donkey (Equus Asinus L)

Abstract

This study was conducted on hearts of healthy donkeys of different age of both sexes obtained from the abattoir of Giza Zoo. The specimens were injected with colored latex and plastoid (epoxy) for the purpose of making casts through the corrosion technique with concentrated hydrochloride acid. CT scan was performed on the coronary arteries after their injection with plastoid barium sulphate suspension for tracing their different directions and dimensions regarding caliper and length calculated digitally and comparing those measurements with what was obtained by the manual method by using the vernier caliper. The results showed that the arterial blood supply of the heart originate mainly from the left and right coronary arteries and that they originate from the left and right aortic sinuses, respectively, this study showed that the right coronary artery is larger and well developed and the dominant artery for the nourishment of the myocardium and it’s the origin of the interventricular subsinosal branch. By comparing the arterial measurements those obtained by CT scan and those obtained by manual method results showed that those measurements matched, and the relative error did not exceed 0.02%, which indicates the accuracy of the measurements obtained by CT scan