Muscle scars and structure of the muscle attachment in the carapace of the ostracode Bicornucythere bisanensis
Muscle scars and structure of the muscle attachment in the carapace of the ostracode Bicornucythere bisanensis
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介形虫背甲肌肉疤痕及肌肉附着结构
DOI：
10.2307/1485652
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发表时间：
1983
影响因子：
1.5
通讯作者：
Y. Okada
中科院分区：
文献类型：
--
作者：
Y. Okada
透射电镜和扫描电镜观察了介形类内收肌和额痕的三维超微结构。每根肌纤维通过表皮细胞与角质层相连，表皮细胞有一个特殊的部分，基底细胞膜的连接交错，微管的厚簇，以及顶端细胞膜上的许多圆锥形半桥粒。超微结构表明，肌肉收缩的张力是通过这一部分传递到肌肉瘢痕。一个丝状的网络，它采取了一个锅的形式，特点是角质层的肌肉疤痕。连接到一个肌肉疤痕的肌肉纤维的数量从一到四个不等。增加的数量的疤痕的变种是由参与额外的表皮细胞在肌肉附着。因为每个疤痕代表表皮细胞的一个特化部分，肌肉疤痕与介形虫在细胞水平上的发育密切相关。双角介形虫甲壳的肌痕和肌附着结构
Transmission and scanning electron microscopy have revealed the threedimensional ultrastructure of the muscle attachment to the cuticle of the adductor and frontal scars in ostracodes. Each muscle fiber is connected to the cuticle by an epidermal cell, which has a specialized portion with a junctional interdigitation of the basal cell membrane, a thick cluster of microtubules, and numerous conical hemidesmosomes at the apical cell membrane. The ultrastructure indicates that the tension of muscular contraction is transmitted through this portion to the muscle scar. A filamentous network, which takes the form of a pan, characterizes the cuticle of the muscle scar. The number of muscle fibers connected to one muscle scar, varies from one to four. Increase in the number of scars in variants is explained by the participation of extra epidermal cells in the muscle attachment. Because each scar represents a specialized portion of the epidermal cell, the muscle scars are germane to the discussion of ostracode phylogeny at cell level. Muscle scars and structure of the muscle attachment in the carapace of the ostracode Bicornucythere bisanensis