Specific features of histological stucture of aorta in ordinary owls, owls and hawks polar teterevyatnika

Described the histological structure of the aorta and brachiocephalic trunk at the owl, owls and polar goshawk. The morphological features in the structure of blood vessels, depending on the environmental conditions and type of flight. As a result of histological examination of the aorta, brachiocephalic trunk, birds of prey found that studied the artery have well-defined inner, middle and outer shell. It was found that the aorta studied birds elastic type, it has an inner shell consisting of columnar endothelial cells, which is a thin layer of collagen and elastin fibers, creating a smooth muscle bundles of the coarse pattern. At Owl ordinary and goshawk endothelium has a columnar appearance. The height of the cell is equal to the width or slightly exceed it. In goshawk aortic endothelial cells adjacent to each other in contact with the emergence of loosely between the narrow cavities under the endothelium in the form of bubbles.