Dittert D D, Bardosi A
Department of Neuropathology, University of Göttingen, FRG.
Acta Anat (Basel). 1989;134(3):206-11. doi: 10.1159/000146688.
Analysis of cryostat cross-sections of the entire platysma muscle from human autopsies revealed enzyme histochemical and morphometric differences between normal human limb and facial muscles. The mean diameter of platysma fibers was about 50% of that of normal limb muscle fibers. Fiber type diameter increased from the medial to the lateral parts of the platysma. A variability coefficient of 356 indicated great variation in fiber caliber, with many fibers of 10 microns and less. Type I fibers showed an increase in density from the medial to the lateral parts of the muscle. The arrangement of histochemical fiber types was irregular with a tendency to form fiber type groupings.
对人类尸体解剖中整块颈阔肌的冰冻切片进行分析，结果显示正常人类肢体肌肉和面部肌肉在酶组织化学及形态测量方面存在差异。颈阔肌纤维的平均直径约为正常肢体肌肉纤维的50%。纤维类型的直径从颈阔肌的内侧向外侧逐渐增大。356的变异系数表明纤维口径差异很大，有许多纤维直径在10微米及以下。I型纤维的密度从肌肉内侧向外侧呈增加趋势。组织化学纤维类型的排列不规则，有形成纤维类型分组的趋势。
