高原鼠兔消化管的解剖学形态特征

The Shape Characteristics of Ochotona Curzoniaes Digestive Tract

对 1 6例 (雄 1 0 ,雌 6 )高原鼠兔 (Ochotonacurzoni ae)的消化管进行了观察描述 :高原鼠兔的舌上有丝状、菌状、轮廓和叶状乳头 ;齿式为 2 2 0 321 0 2 3;单室胃 ,容积 3 2～8 0mL ;小肠平均长度为 970 1 7+88 0 8mm ,为体长的 7 31±0 2 8倍 ;大肠平均长度为 5 5 8 39± 6 6 39mm ,为体长的 4 2 1± 0 36倍 ;小肠与大肠总长度为 1 5 2 8 95± 1 4 7 78mm ,为体长 (1 32 78mm )的 1 1 5 2± 0 5 9倍 ;盲肠为 2 0 4 34±2 6 98mm ,为体长的 1 5 4倍。回盲口有盲小管 ,盲肠螺旋褶上有长丝状乳头 ,盲结口有盲结口瓣 ,盲结口下接结肠网状部。

By making some observation on the sixteen(ten males,six famales)Ochotona curzoniaes digesstive tract;Its tonggue has 4 kinds of papillae,they are filiformes,fungiformes,vallatea and foliatae The dentate formula is as 220321023ventriculus,comtent is 3 2～8 0mL;The average length of small intestine is 970 17±88 08mm,This is 7 31±0 28 time of its whole body;The average length of large intestine is 558 39±66 39mm,This is 4 21±0 36 time of its whole body The total length of both small and large intestine is 1528 95±147 78mm,it is 11 52±0 59 time of its body(whole body is 132 78mm) Caecum is 204 34±26 98mm,and is 1 54 time of whole body There is a small tube near the ostium ileocaecale There is long papillae filiformes on the spiral fold of caecum Ostium caecocolica has valvula caecocolica,and net colon under Ostium caecocolicum