前腹

Other diagnostic features include the presence of a crest along the anterodorsal midlines of the premaxillae,the edentulous maxilla,the presence of a groove-like trough along with the anterolateral margin of the maxilla on the ventral surface,the presence of six conical premaxillary teeth,and no more than six conical dentary teeth which are restricted to the anterior portion of the dentary.

其他主要特征有：前颌骨沿前背中央有一隆嵴；上颌仅前颌骨有6枚圆锥形齿，无上颌骨齿；上颌骨沿前腹侧缘有一沟槽；下颌齿骨齿都集中在前端且至多不超过6枚。依据上述这些特征很易把短吻贫齿龙与其他已知海龙相区别。短吻贫齿龙头骨顶面松果孔大且很前位，头骨腭面的锄骨和翼骨均无齿，它的颈较长(至少可以辨认出13个颈椎)。

The electrical activities and sequences of oesophagus, reticulum and the four compartments of rumen in sheep were recorded with polygram system RM-6008 during rest, feed, rumination and eructation.

用RM-6008型记录仪记录了绵羊在安静、进食、反刍和嗳气等状态下的食管、网胃和瘤胃的前背囊、后背盲囊、后腹盲囊、前腹囊的电活动及其先后次序。

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。

Objective To provide anatomical basis for a new style operation using periosteal flap composed of submental artery, anteroventral portion of digastric muscle and submental artery for the renovation of laryngotrachea.

目的 为应用颏下动脉二腹肌前腹为蒂的下颌骨骨膜瓣转位修复喉、气管提供解剖学依据。方法对23例（46侧）头颈部标本的颏下动脉、颏下静脉、二腹肌前腹的相关结构进行观测。

It is feasibe that the periosteal flap composed of submental artery,anteroventral portion of digastric muscle and mandibular periosteum is useful laryngotracheal renovation.

带颏下动脉二腹肌前腹蒂的下颌骨膜瓣有转移范围大、血供丰富、应用灵活等优点。颏下动脉二腹肌前腹为蒂的下颌骨膜瓣修复喉气管具有可行性。

Methods The anatomical structures correlative with submental artery,submental vein,anteroventral portion of digastric muscle and mandibular periosteum in 23(46 sides)cephalocervical samples were measured.

结果 颏下动脉为面动脉的恒定分支，走行于下颌下腺与下颌骨下缘之间，恒定分支供应二腹肌前腹和下颌骨骨膜，并与对侧有广泛的吻合支。

Results:According to different part of the vessels,there were 2 types:type 1,from the superficial surface of anterior belly of digastric muscle to the surface of inferior margin of mandible to subcutaneous part,accounting for 36%;type 2,from the deep surface of anterior belly of digastric muscle to the deep surface of inferior margin of mandible to s...

结果 ：根据血管走行差异分：1型：主干经二腹肌前腹浅面到下颌骨下缘表面至皮下占 3 6%，2型：主干经二腹肌前腹深面到下颌骨下缘深面至皮下占 64%；1型血管位置表浅，易于分离，且蒂较长，旋转度大，2型相比反之。结论：根据颏下动脉走行设计不同皮瓣的大小来修复面部皮肤组织

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 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。

After the functional appliance protruded the mandible, it resulted in a clear alteration in the biomechanical characteristics of the masticatory muscles. The contractile tension of lateral pterygoiod muscles incerased with its contraction time prolonges, while that of the digsstic muscle decreased and shortened.

当功能性矫治器引导下颌前伸后，对运动下颌肌肉作在体等长主动收缩性质的检测，结果表明翼外肌收缩张力增强，收缩速度变慢；二腹肌前腹收缩张力减弱，收缩速度加快。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。