Gans C, Loeb G E, Vree F D
Department of Biology, University of Michigan, Ann Arbor 48109-1048.
J Morphol. 1989 Mar;199(3):287-97. doi: 10.1002/jmor.1051990305.
Morphological and physiological analyses confirm that the semitendinosus muscle of goats contains two separate compartments in series, each with distinct innervation. These compartments of the muscle are in turn composed of short fibers (approximately four fibers in series in the proximal compartment and seven to eight fibers in the distal compartment) which overlap each other for more than 30% of their length, with much of the overlapping portions consisting of slender tails that terminate at one-tenth of the midfiber diameter. Groups of fibers are associated into relatively narrow bands that run end-to-end in each compartment. The data suggest that the maximum length of muscle fibers may be limited; even the fibers of parallel-fibered muscles may not scale with the dimension of the animal.
形态学和生理学分析证实，山羊的半腱肌包含两个串联的独立肌室，每个肌室都有独特的神经支配。这些肌室依次由短纤维组成（近端肌室约有四根纤维串联，远端肌室有七到八根纤维串联），它们在超过30%的长度上相互重叠，大部分重叠部分由细长的尾部组成，这些尾部在纤维中部直径的十分之一处终止。纤维束在每个肌室中首尾相连形成相对较窄的带。数据表明，肌纤维的最大长度可能受到限制；即使是平行纤维肌的纤维也可能不会随着动物体型的增大而相应增大。
