【摘要】 本文报导了用解剖学方法观察的大鲵部分体结构的形态特征,其体腔只具有围心腔和胸膜腹膜腔两部分。胃粘膜褶横行,肠分段不明显,泄殖腔构造简单,肝脏形态特异。呼吸器官形态结构极其特殊。泌尿生殖器官进化程度相对较低。神经系统中小脑、脑脊膜较特殊,脊神经背、腹根在椎间孔外联合,只具10对脑神经。更多还原

【Abstract】 A observation of the shape and characteristic of parts of the body structure of Meyalobatrachus davidianus by the way of anatomy was reported in this paper. There are only two parts: Cavum ncricavdialc pleura and peritoneum cavity in its body cavity. The wrinkle of gastric mucosa go on the rampage and the intestinal sections are not clear,with a simple structure of cl’oacal cavity,and an unusual shape of liver. The inorst special is the shape structure of the respiratory organs,The evolution of the wrinang and reproductive organs is lower relatively. The small brain,membranes of BrAin,rneninges spinalis are more unurual in its nervous system. There are only ten pairs of brain nerves,the symphysis of the bsck and sbdomen root of spinal werve is outside the intervetebra1 opening.更多还原