SummaryDuring routine educational dissection of male cadaver, in the cervical region bilateral triceps sternocleidomastoid muscle (SCM) was observed. These additional heads were arising from the clavicle. They lead to a wider origin of SCM and a narrower minor supraclavicular fossa. It is very important to know variations of SCM, because it may cause complications in surgical procedures. Keywords: Sternocleidomastoid muscle, Cadaver, Cervical regionÖzetRutin eğitim diseksiyonları sırasında 72 yaşındaki erkek kadavrada boyun bölgesinde bilateral üç başlı m. sternocleidomastoideus görüldü. Clavicula'dan yükselen bu ilave başlar daha geniş m. sternocleidomastoideus orijini ve daha dar fossa supraclavicularis minor oluşmasını sağlamaktaydı. Musculus sternocleidomastoideus'un varyasyonlarının bilinmesi cerrahi prosedülerde komplikasyonlar için önemlidir.Anahtar Kelimeler: Musculus sternocleidomastoideus, Kadavra, Servical bölge
During the dissection of a 72-year-old male cadaver for medical education, cervical region was dissected. The skin, the platysma muscle, and the superficial vessels were removed, and the sternocleidomastoid muscles were exposed. In the cervical region bilateral third head of the sternocleidomastoid muscles were observed. One of these head was arising from the sternum, and the other two heads were arising from clavicle. It is important to know variations of sternocleidomastoid muscles, for radiological examinations and in order to avoid complications of surgical procedures