Browsing by Author "Karadag, Hueseyin"

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A Morphometric and Stereological Study on Cervical Spinal Cord Segment of Goose
(Wiley, 2018) Cakmak, Gamze; Karadag, Hueseyin; Ragbetli, Murat Cetin; Yildirim, Serkan; Yilmaz, Osman
In this study, volume density of white matter and grey matter areas of cervical segment of spinal cord in adult geese weighing 3-4kg was examined using stereological methods. 10 geese were used as material without sex discrimination. All animals underwent perfusion with 10% buffered formaldehyde. Following the perfusion, animals were kept in 10% formaldehyde for 1week. Geese were then dissected. Cervical area of spinal cord was revealed removing cervical spine. Tissue samples were obtained from each segment of cervical area. 5m thick cross-sections were taken from these tissue samples via microtome. Series of cross-sections were obtained by sampling in the ratio of 1/250 including 12 cross-sections from each cervical segment of every animal. Cross-sections were stained by haematoxylin eosin. They were photographed under microscope. Volume density (volume fractions) of both whole tissue and white matter and grey matter parts in each cervical segment of spinal cord were calculated using Cavalieri's Principle. In the study, total volume of cervical segment, volume of white matter and grey matter, and ratios of these volumes one another were assessed in goose.
The Venous Drainage of the Heart in the Tuj Sheep
(Kafkas Univ, veteriner Fakultesi dergisi, 2009) Aksoy, Guersoy; Ozmen, Erdal; Kurtul, Ibrahim; Ozcan, Sami; Karadag, Hueseyin
This research aimed at observing the veins of the hearts of 10 Tuj sheep by latex injection. The results documented that the veins draining the heart of Tuj sheep were the great and middle cardiac veins, the right cardiac veins, and the minute cardiac veins. The coronary sinus was determined to be the continuation of the left azygos vein, receiving the great and middle cardiac veins. The left marginal ventricular vein in one heart and the veins draining the left atrium in five hearts were observed to terminate in the coronary sinus. In one cadaver, venous blood of the left atrium was shown to be emptied both into the left azygos vein and the caudal vena cava. Moreover, the left distal ventricular vein was displayed to discharge the venous blood into the coronary sinus in five hearts and into the great cardiac vein in two hearts, yet was not present in three hearts. Venous blood of the left atrium near the aortic arch was displayed to empty into the cranial vena cava in two cadavers. There was another vein ending within the angle where the paraconal interventricular vein became the left circumflex vein, which reflected the angular vein present in the cat and horse. The right semicircumflex vein was seen to be constituted by the right marginal ventricular vein and the right proximal ventricular vein and the right conal vein. The right distal ventricular vein was determined to drain directly into the right atrium. There were also eminent anastomoses between the branches of the cardiac veins observed.