Kronik melatonin enjeksiyonunun renin granülleri üzerindeki histolojik etkisi

Suleyman Demirel Universitesi TIP FAKULTESI DERGISI: 2008 Mart; 15 (2) Kronik melatonin enjeksiyonunun renin granulleri uzerindeki histolojik etkisi Kemal Ergin Hatice Kubra Basaloglu Ozet M. ekstensor indicis, ulna.nin ve membrana interossea.nin arka kismindan baslar ve isaret parmagi yakininda ekstensor aponorozda sonlanir. M. biceps brachii ise kisa ve uzun basi olan iki basli bir kastir. Literaturde m. ekstensor indicis kasinin yoklugu nadir olarak tanimlanmis ve uc basli m. biceps brachii olgularinin varligi bildirilmistir. Anabilim dalimizda 2005-2006 egitim ogretim yilinda rutin kadavra diseksiyonu sirasinda 82 yasindaki erkek kadavrada sol ekstremitede m. ekstensor indicis kasinin olmadigi goruldu. Ayni vakada ve ayni ekstremitede m. biceps brachii kasinin da uc basli oldugu ve ucuncu basinin humerus.un anterolateralinden basladigi tespit edildi. Bu uc bas birlestikten sonra tuberositas radii ve aponeurosis bicipitalis.de sonlanmaktaydi. Yaptigimiz literatur taramalarinda ayni olguda ve ayni ekstremitede m.ekstensor indicis yoklugu ile birlikte uc basli m. biceps brachii olgusuna rastlanmamistir. Calismamizda tanimladigimiz bu varyasyonlarin bu bolge ile ilgili cerrahi girisimlerde ve bu bolge patolojilerinin tani ve tedavilerinde ilgili hekimlere yardimci olacagini dusunmekteyiz. Anahtar kelimeler: M. ekstensor indicis, uc basli m. biceps brachii, varyasyon, anatomi Abstract Absence of extensor indicis muscle with three headed biceps brachii Extensor indicis muscle normally begins from the posterior side of ulna and interosseous membrane and ends near the index finger on extensor aponeurosis. Biceps brachii muscle is a two-headed muscle which has short and long heads. Absence of extensor indicis muscle is rarely identified and existence of three headed biceps brachii muscle was reported. In our department, during routine student dissection in 2005- 2006 term, absence of extensor indicis muscle in left extremity was observed in 82 year-old man cadaver. In the same case and same extremity, it was also observed that biceps brachii muscle had three heads. The third head of biceps brachii muscle was originating from anterolateral part of humerus. After joining each other, all three heads of biceps brachii muscle were ending on the radial tuberosity and bicipital aponeurosis. However, in literature search we couldn.t find any case including the absence of extensor indicis and three headed biceps brachii muscle in the same cadaver and the same extremity. Therefore, we think that knowing the variations described in the present study can be helpful for surgeons interested in diagnosis and treatment of possible pathologies related to this area. Key words: m. extensor indicis, three headed biceps brachi, anatomy, variation