嚼肌

The masseter, or jaw muscle, is the strongest due its mechanical advantage, in which the muscles attach to the jaw to form a lever.

嚼肌或者颚肌是最强壮的肌肉主要得力于它的机械优势，肌肉依附在颚上构成了一种杠杆。

The greatest contractile tension of the masseter, digastric and lateral pterygoid muscles was, similar to the 8-week-old control group, at an interincisal dis- tance of 18mm in open mandible, 6mm protrusion and 2mm retraction of the mandible respectively. The contraction time prolonged gradually according to the Change of jaw position and the extension of muscles.

即嚼肌、二腹肌前腹、翼外肌的最大张力分别位于打开下颌切牙间距离18mm、下颌前伸6mm和下颌后退2mm时；各肌的收缩速度均随下颌位置变化，肌肉被拉伸，而逐渐减慢。

Methods: Between 1984 and 1996, there were 44 cases of head and neck cancer that underwent radical surgery and had the pharyngealdefect reconstructed with a muscular flap. Three different muscular flaps were used includig the masseter muscular flap 27 cases, the pectoralis major muscular flap 15 cases, and the sternocleidomastoid muscular flap 2 cases.

自1984年至1996年，共44例头颈部碰症病患经彻底手术切除后，以肌肉瓣做咽部缺损之重建，其中27例以嚼肌肌肉瓣重建，15例以胸大肌肌肉瓣重建，2例以胸锁乳突肌肌肉瓣(sternocleidomastoid muscular flap)重建。

Methods Ten volunteers with experimental premature contact at the first premolar, the first molar and the second molar were asked to clench in CO and their electromyographic activity of the masseters, anterior temporalis and anterior belly of digastric muscles were measured simultaneously.

测定 10名志愿者在正中牙合；左右两侧下颌第一双尖牙、第一磨牙、第二磨牙实验性早接触状态下，嚼肌、颞肌前束及二腹肌前腹肌电活动的积分值与频谱值。

The contrctile tension of the masster muscles increased and the contraction time shortened, while that of the digastric muscles increased and prolonged.

戴上颌切牙〓平面板打开下颌分开后牙咬〓后，嚼肌收缩张力增加，收缩速度加快；二腹肌前腹收缩张力增加，但收缩速度变慢。

The contractile tension of the masster, digastric and lateral pterygoid muscles varied according to the mandibular position, being greatest when the mandible was opened at an interin- cisal distance of 13mm, protruded 6mm and retrated 1mm.

正常4周龄大鼠嚼肌、二腹肌前腹、翼外肌的最大收缩张力分别位于打开下颌切牙间距离13mm、下颌前伸6mm和下颌后退1mm时。

This indicated that geniohyoid paralleling with the direction of distraction presents adaptive changes such as muscular hypertrophy and muscle fiber type transformation.

这说明与牵张方向平行的颊舌骨肌在牵张过程中出现了肌肉增生与肌纤维类型转变等适应性变化，而与牵张方向垂直的嚼肌受其影响不大。

Differential expression of IGF-I in muscles of mastication during distraction osteogenesis of mandible in canine.This study was conducted to observe the expression of IGF-I in masseter and geniohyoid during distraction osteogenesis of mandible in canine through the immuno-histocytochemical method.

试验三犬下颌骨牵张成骨过程中咀嚼肌IGF.I的表达变化将所取标本进行免疫组化染色，检测犬下颌骨牵张成骨过程中嚼肌与颁舌骨肌中IGF.I表达的变化。

In this experiment, in the way of observing the histological changes, relative content of myosin heavy-chain mRNA and changes of the expression of IGF-I in masseter and geniohyoid muscle during distraction osteogenesis of canines mandible, we can learn about the rebuilding ability of masticatorymuscles and its changing regularity, and preliminarily discuss its remodeling mechanism.Anteroposterior bilateral distraction osteogenesis was performed on 14 mongrel canines, 6 to 8 months of age, using intraoral mandibular distractor.

本实验通过观察犬下颌骨牵张成骨过程中嚼肌与颏舌骨肌的组织学变化、肌球蛋白重链亚型mRNA含量以及IGF-I在咀嚼肌中表达的变化，了解牵张成骨过程中口颌肌肉的改建能力及其变化规律并初步探讨其改建机制。

All the muscles rebuilt to stable structure after accomplish of distraction, which may help the post-operative stability.2. The changes of myosin heavy-chain mRNA in muscles of mastication during distraction osteogenesis of mandible in canineThe mRNA of MHCI, MHCH and GAPDH in masseter and geniohyoid were measured by RT-PCR.

试验二犬下颌骨牵张成骨过程中咀嚼肌肌球蛋白重链亚型mRNA含量的变化将所取标本应用RT－PCR对嚼肌与颌舌骨肌肌球蛋白重链的两个亚型，即MHCI与MHCll与内参照GAPDH的InRNA进行半定量检测并进行统计学分析。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。