肌节

此外，肌节的缩短发生于细肌丝沿粗肌丝“滑行”之际

Instead , sarcomere shortening occurs when the thin filaments'slide " by the thick filaments .

肌原纤维直径、肌节长度、I带、A带长度与肉质相关不显著（P＞0.05）。

There were no significant correlation between the myofibril diameter , sarcomere length , I , A length and muscle quality traits ( P > 0.05 ) .

胶原纤维、Z线结构及肌节等结构都比较清晰完整。

Collagen fibers , Z-line structure and the structure of the sarcomere are more clear and complete .

结果较之IR组，PP组和DP组的心室肌细胞超微结构损伤明显减轻（主要表现为线粒体及肌节的保护作用）。

Results Compared with IR group , injury of myocardial ultrastructure was reduced significantly by PP or DP .

初孵仔鱼全长（8.93±0.35）mm，肌节数为12+16+14；

Newly hatched larvae have a total length of ( 8.93 ± 0.23 ) mm , with about 12 + 16 + 14 myomeres and blood circulation ;

NaCl处理的肉样肌节基本上保持原有轮廓，只是稍微模糊，且在Z盘处出现轻微弱化。

The sarcomere of NaCl treatment remained original structure basically except that it seemed less pronounced and had slightly weakening at Z disk .

肉样经HMP处理后，肌节基本上保持原有结构，只是Z盘处稍有弱化发生。

The sarcomere struture of HMP also remained basic structure except the weakening at Z disk .

剪切力值与原料肉中水分含量和肌节长度、蒸煮损失、熟肉中总胶原蛋白含量、肌节长度和肌纤维直径显著相关（P＜0.05）。

WBSF was correlated significantly ( P < 0.05 ) with moisture content , sarcomere length of raw meat , and cooking losses , total collagen content , sarcomere length and fiber diameter of cooked meat .

电镜观察：对照组：肌节排列整齐，Z线清晰，线粒体嵴致密，细胞膜完整，无肿胀，结构正常。

Control group : sarcomere neatly , Z line clear , mitochondrial cristae density , cell membrane integrity , no swelling , structure is normal .

肌节A带、I带和H带分明，Z线清晰，二联体或三联体出现在H带处。

The A - , I - , and H-bands in the sarcomere are clear , and the Z-lines are distinct , the dyads or triads are located at the H-bands .

白肌肌纤维的数量和排列方式受ATR影响显著，肌节长度缩短。

Number and arrangement of myofibers ( esp. white muscle myofibers ) were significantly influenced , and trunk myotomes shortened .

由于PSE肉部分肌球蛋白变性，其肌原纤维的舒展肌节长度总是小于正常肉。

The sarcomere of PSE pork was shorter than that of normal pork because of the partial denaturation of PSE myosin .

结果1.电镜观察超微改变：I/R组部分肌纤维断裂，肌节模糊，线粒体肿胀，部分线粒体膜破裂，核膜完整高度皱缩，染色质浓缩边聚、呈块状；但SF组上述病变程度明显减轻。

Results Electron microscope change : There were mitochondria swell , rupture of mitochondrial membrane in I / R group , but less change in SF group .

微观上，Z线的扭曲、降解、肌纤维直径减小、肌节长度增加以及蛋白质空间结构的改变导致了宏观上肌肉嫩度改善、保水性提高。

The micro level , the distortion and degradation of Z line , reduction of muscle fiber diameter , increase in sarcomere length and changes in spatial structure of protein improved the tenderness and increased the water retention .

对照和DSPP处理样品的肌原纤维结构完好，肌节轮廓完整、清晰可见。

The myofibrils of control and DSPP treatments remained integrity , the structure of sarcomere was intact and clear .

脊椎动物Msx基因为非连锁，包含果蝇肌节同源盒基因相关的一系列基因。

Vertebrate Msx genes are unlinked , homeobox-containing genes that bear homology to the drosophila muscle segment homeobox genes .

移植后29～32h，靠近神经管的DC体节向中壁破裂，外迁的间充质细胞在生肌节与神经管和脊索之间，形成生骨节（即原位生骨节）。

After 29-32 h of grafting , the medial wall of DC somite was broken down and migrating mesenchymal cells moved toward notochord and formed sclerotome ( the sclerotome in situ ) between myotomes and neural tube as well as notochord .

家族性肥厚型心肌病（FHCM）系常染色体显性遗传性疾病，单一肌节蛋白基因突变即可致病。

Genetic studies have shown that familial hypertrophic cardiomy-opathy ( FHCM ) is an autosomal dominant disorder of heart muscle . One of the mutations in genes encoding sarcomeric , proteins can result in this disease .

透射电镜检查：内皮细胞、封堵器附近心房肌肌节及线粒体形态、结构正常。

The structure of endothelial cell was normal by TEM examination .

激光衍射法在测量肌节长度中的应用

The Use of Laser Diffraction in the Measurement of Sarcomere Length

背阔肌节段肌瓣移植修复面瘫的应用解剖

Applied anatomy of reconstruction of facial paralysis using segmental latissimus dorsi flap

幼年到青年为心室肌节和线粒体迅速发育期；

Sarcomeres and mitochondria in ventricle develop rapidly from infant to young ;

肌原纤维排列整齐.肌节各带清晰。

Neatly arranged myofibrils . Each with clear sarcomere .

这些基因编码的肌节蛋白质，当其突变时会导致成人心肌疾病。

These genes encode sarcomere proteins that , when mutated , cause adult-onset cardiomyopathies .

肌节中的A带和I带界线不清。

In addition , A - band and I - band were not clear .

目的观察尸僵再形成中肌节长度的变化。

Objective To observe changes of the length of sarcomere of rat when restiffening .

此外，肌节的缩短发生于细肌丝沿粗肌丝滑行之际。

Instead , sarcomere shortening occurs when the thin filaments " slide " by the thick filaments .

结果死后未破坏的尸僵肌节的长度明显小于尸僵再形成时的长度。

Results The length of sarcomere of rigor mortis without destory is obviously shorter than that of restiffening .

在36～48小时幼体中，碱性磷酸酶在消化道中强烈表达，但在咽鳃区不表达，同时在肌节中仍有弱的表达。

In 36 ~ 48 hr larvae , AP expressed strongly in the whole endoderm except the pharynx region .

方法应用扫描电镜测定不同条件下取材的40只大鼠股四头肌肌节长度，判断再僵直的强度。

Methods We measured the length of sarcomere of quadriceps in 40 rats in different condition by scanning electron microscope .