科研之友
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摘要
Inadequate ossification of the interparietal region induces the appearance of interparietal and wormian bones, also associated with genetic factors. The formation of the interparietal bone depends on the separation of the intermediate segment from the lateral plate by the transverse occipital suture, which means that this bone is formed by the medial and lateral plates. Wormian interparietal bones or epactal bones are located within the interparietal region, being single or multiple, and are located in the upper central region of the interparietal region, the sutural bones, however, are formed from additional ossification centers that can occur in near sutures. The aim of this work was to macroscopically evaluated the presence of changes in the structure of the adult human occipital bone in cadavers found in the human anatomy laboratory of the Goi芍s Federal University in order to determine the frequency of supernumerary bones associated with occipital and parietal bones and relate it to literature, as well as to provide images and data for ethnic studies in the Brazilian population and data that could help medical practices such as fetal position and radiographs. Our data have indicated that the frequency of the interparietal bone of 1.92% is among those seen in countries such as Japan, Bulgaria, Nigeria, India and Turkey, but lower than values found in pre-Hispanics Chileans; however, for the sutural bones, the frequency of this study was higher than other data obtained from Spanish and other Brazilians. La osificaci車n inadecuada de la regi車n interparietal induce a la aparici車n de los huesos interparietal y wormiano, asociado tambi谷n con factores gen谷ticos. La formaci車n del hueso interparietal depende de la separaci車n del segmento intermedio desde la placa lateral por la sutura occipital transversal, lo que significa que este hueso se forma por las placas medial y lateral. Los huesos interparietales wormianos o hueso epactal se encuentram dentro de la regi車n interparietal, siendo 迆nicos o m迆ltiples, y se localizan en la regi車n central superior de la zona interparietal. Los huesos suturales, sin embargo, se forman de centros de osificaci車n adicionales que pueden aparece cerca de estas suturas. El objetivo de este trabajo, fue evaluar macrosc車picamente la presencia de variaciones en la estructura del hueso occipital en cad芍veres humanos, adultos encontrados en el Laboratorio de Anatom赤a Humana de la Universidad Federal de Goi芍s, con la finalidad de determinar la frecuencia de los huesos supernumerarios asociados con los huesos parietal y occipital. Adem芍
