EN
Eight hearts of birds of prey were used in the research: Northern Eagle Owl Bubo bubo (Linnaeus, 1758) (two hearts), White-tailed Sea Eagle Haliaeetus albicilla (Linnaeus, 1758) (four hearts), Steller's Sea-Eagle Haliaeetus pelagicus (Pallas, 1811) (one heart) and Northern Goshawk Accipiter gentilis (Linnaeus, 1758) (one heart). The collected material was analysed morphologically as far as the aortic valve and its adjacent structures were concerned. The hearts also underwent imaging with the use of a Multi-Slice Computed Tomography Scanner and 3 Tesla Magnetic Resonance Imaging scanner. A range of new terms was suggested to describe the aortic valve and its adjacent structures. The above-mentioned morphological and image examinations will - enable better understanding of the biomechanics of the aortic valve of birds of prey and will allow us to relate basic research to clinical sciences.