Browsing by Author "Onuk, Burcu"

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    An investigation on the renal portal system in long-legged buzzard (Buteo rufinus)
    (Ankara Üniversitesi, 2020-12-25) Sizer, Sedef Selviler; Kabak, Murat; Onuk, Burcu; Veteriner Fakültesi
    This study was carried out for the morphological examination of renal portal system in the long-legged buzzard. A total of nine adult long-legged buzzards were used in the study. The latex procedure was performed for the macroanatomic detection of the vessels forming the renal portal system. Dissections were performed under the stereomicroscope and later photographs were taken. The renal portal system vessels formed by the cranial renal portal vein and caudal renal portal vein in the long-legged buzzard. Afferent renal branches were separated from these vessels and efferent renal branches were observed to join renal veins. The anastomosis of the left cranial renal portal vein and right cranial renal portal vein was not observed at the cranial side, besides the presence of interiliac anastomosis was determined between the right internal iliac vein and left internal iliac vein at the caudal side. The findings of the renal portal system of long-legged buzzard (Buteo rufinus) were generally similar to those noted in other birds.
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    The anatomy of cervical sympathetic ganglia in Saanen goats
    (Ankara : Ankara Üniversitesi Veteriner Fakültesi, 2019) Kabak, Murat; Onuk, Burcu; Sizer, Sedef Silviler; Kabak, Yonca Betil; Veteriner Fakültesi
    : Sympathetic ganglions located in the cervical region are important organs that make the final synapse of the sympathetic nerve fibers reached to the head, neck, and forelimbs. As far as we know, there are not any anatomical data about cervical sympathetic ganglia in Saanen goat. In this study, we determined the nerve branches separated from the ganglia and the location of the ganglia. We also determined the expression of some enzymes and proteins such as tyrosine hydroxylase (TH), dopamine β-hydroxylase (DβH), neuropeptide Y (NPY) and substance P (SP) in ganglia. Ganglion cervicale craniale (GCC) was on the medial side of bulla tympanica. Mainly branches named as nn. carotici interni, n. jugularis and nn. carotici externi was found to be separated from this ganglion and thin branches joined to the nearby nerve. It was found that n. vertebralis, the two branches that constitute the ansa subclavian, and the thin nerve branches involved in the surrounding tissues and organs separated from ganglion cervicothoracicum (GCT) that located in the first intercostal space. A total of five ganglion cervicale medium (GCM) found at the junction of the two branches forming the ansa subclavia. Another ganglion was not found on where cervical part of truncus sympathicus in all dissections and histological examinations. DβH, TH, NPY and SP were revealed to be express in all ganglia. DβH and NPY in CCG, TH in MCG, DβH, NPY and TH in GCT were found to be more intense staining : Cervical bölgede yer alan sempatik ganglion’lar baş, boyun ve ön ektremite’lere giden sempatik sinir liflerinin son sinaps yaptığı önemli organlardır. Saanen keçisinde servikal sempatik ganglion’lara ait anatomik bilgiye rastlanılmadı. Bu nedenle, bu çalışma ile bahsi geçen ganglion’ların yeri, ganglion’dan ayrılan sinir kolları ve ganglion’lardaki dopamin β-hidroksilaz (DβH), tirozin hidroksilaz (TH), Neuropeptid Y (NYP) ve Substans P (SP) gibi bazı enzim ve protein expresyonu belirlendi. Bulla tympanica’nın medial’inde yer alan ganglion cervicale craniale (GCC)’den başlıca nn. carotici interni, n. jugularis, n. caroticus externus ve çevre sinirlere katılan ince kollar ayrıldığı görüldü. Birinci interkostal aralıkta yer alan ganglion cervicothoracicum (GCT)’dan başlıca n. vertebralis, ansa subclavia’yı oluşturan iki kol ve çevre doku ve organlara katılan ince sinir kollarının ayrıldığı belirlendi. Ansa subclavia’yı oluşturan iki kolun birleşim yerinde toplam 5 adet ganglion cervicale medium (GCM)’a rastlandı. Yapılan tüm diseksiyon ve histolojik incelemelerde truncus symphaticus’un cervical bölümünde başka bir gangliona rastlanmadı. DβH, TH, NPY ve SP’nin tüm ganglion’larda exprese olduğu, GCC’de DβH ve NPY’nin, GCM’da TH’ın, GCT’da DβH, NPY ve TH’ın daha yoğun boyanma gösterdiği belirlendi.