چكيده لاتين :
Today, with emphasis on the mechanical heart and heart transplantation from one human to another and
one species to another, a knowledge of the anatomy of the birdיs heart could contribute to these
accomplishments. Eight male adult ostriches were used to study the heart macroscopically. This study
revealed that the ostrich heart has some different features from the other birds. In the ostrich, fibrous
pericardium as sternopericardialligament attaches along the thoracic surface of the sternum. The central edge
of muscular valve hangs down into the right ventricle and gives attachment to its rough parietal wall by a
thick muscular stalk. The left and right pulmonary veins enter the left atrium independently and their
openings were completely separated from each other by a septum. In the heart of the ostrich, the moderator
bands were found in both the right and left ventricles in different locations. The right ventricle presents one
tendinous moderator band near the base of the ventricle that extends from septum to the muscular valve. Also
the moderator bands as tendinous thread like or flat sheet are usually present at about apex of the right
ventricle that extends from septum to the parietal wall. In the left ventricle, there were some tendinous
moderator bands close to the apex that extends from septum to the parietal wall and between trabeculae
carneae of the parietal wall.
