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研究了甲醛固定的成年男性尸体5具（10侧）前臂肌群的构筑学特性。结果表明：前臂肌均为羽肌和半羽肌，羽状角5．4°～16．3°之间。在腕屈伸肌系统中，腕的屈肌和伸肌的生理横切面积（CSA）分别为13．54cm2和14．82cm2,这表明腕的屈肌和仲肌的肌力配布相当。在指屈伸肌系统中，指的屈肌和伸肌的CSA分别为25．82cm2和7．68cm2，屈肌是伸肌的3倍多，表明手指的屈肌力量明显高于伸肌。根据构筑特性分析，前臂各肌肌纤维的肌节长度明显不同，范围在2．07～2．77um，其中屈肌的肌节长度平均为2．32um，伸肌的肌节长度平均为2．60um．伸肌明显高于屈肌，这提示伸肌的缩短速度和位移幅度明显比屈肌大。本文对肌构筑与肌功能的关系作了讨论。
The structural characteristics of five (10-sided) forearm muscles of adult male cadavers fixed with formaldehyde were studied. The results showed that the forearm muscles were all feather muscle and half feather muscle with pinnate angle 5.4 ° ~ 16.3 °. In the wrist flexor and extensor system, the wrist flexor and extensor physiological cross-sectional area (CSA) were 13.54cm2 and 14.82cm2, indicating that the wrist flexor and muscle strength of the secondary muscle distribution. In the flexor-extensor system, CSA of flexor and extensor refers to 25.82 cm 2 and 7.68 cm 2, respectively, and flexor is more than 3 times of extensor, indicating that flexor strength of fingers is significantly higher than that of extensor. According to the analysis of the construction characteristics, the sarcomere length of each muscle fiber of forearm was significantly different, ranging from 2.07 to 2.77um. The average sarcomere length of flexor was 2.32um and the average length of sarcomere of extensor was 2.60um . The extensor muscle was significantly higher than the flexor, which suggested that the extensor shortening speed and displacement amplitude was significantly larger than the flexor muscle. This article discusses the relationship between muscle building and muscle function.