Abstract：
The canine diaphragm is a muscular and tendinous dome-like plate and is largely involved in digestive and respiratory functions. Very few studies compared morphology of the diaphragm between dogs and cats and no studies have investigated the effects of individual factors on this morphology. So the aim of this study was to (1) study the effects of individual factors on the morphology of the diaphragm and (2) to compare its morphology between cats and dogs. Surface measurements of 86 diaphragms were performed. The tendinous centre (TC), the lumbar part of the peripheral muscular (LP) and the sternal and costal parts of the peripheral muscular (SCPM) were measured. Measurement ratios (surface of anatomical part of the diaphragm/total surface of the diaphragm) were used for statistical analysis (TC%S, LP%S, SCPM%S). The SCPM%S are significantly lower, and the LP%S are significantly higher when bodyweight increases in dogs and cats. The TC%S are significantly lower when the body condition score of dogs increases. The SCPM%S are significantly higher, and therefore, the TC%S and LP%S lower in brachycephalic animals as opposed to mesocephalic animals. The TC%S are significantly higher in dogs than in cats and the SCPM%S are significantly higher in cats than in dogs. This study proposed a cartography of the diaphragm morphology in cats and dogs taking into account individual animal factors. Significant differences in the diaphragm morphology between cats and dogs and between mesocephalic and brachycephalic animals were found. Further studies are necessary to confirm these results and to investigate the consequences of these variations.
摘要：
犬隔膜是肌肉和肌腱的圆顶状板，主要参与消化和呼吸功能。很少有研究比较狗和猫之间隔膜的形态，也没有研究研究个体因素对这种形态的影响。因此，本研究的目的是（1）研究个体因素对隔膜形态的影响，（2）比较猫和狗之间的形态。进行86个隔膜的表面测量。肌腱中心(TC)，测量周围肌肉（LP）的腰椎部分以及周围肌肉（SCPM）的胸骨和肋骨部分。测量比（隔膜的解剖部分的表面/隔膜的总表面）用于统计分析（TC%S，LP%S,SCPM%S)。SCPM%S明显较低，当狗和猫的体重增加时，LP％S显着升高。当狗的身体状况评分增加时,TC%S显著较低。SCPM%S明显更高,因此,短头动物的TC%S和LP%S低于头颅动物。狗的TC%S明显高于猫，猫的SCPM%S明显高于狗。这项研究提出了猫和狗隔膜形态的制图，其中考虑了个体动物因素。发现猫和狗之间以及头颅和短头动物之间的the肌形态存在显着差异。需要进一步的研究来确认这些结果并调查这些变化的后果。
