脊椎动物从水生到陆生的结构演变

由水生环境到陆地环境的变化,脊椎动物从圆口类、鱼类、两栖类、爬行类、鸟类到哺乳类,其身体结构也发生了巨大的演变。从脊椎动物的皮肤、呼吸系统、血液循环系统、神经系统和感觉器官、骨骼、生殖等结构对环境的适应等方面,以进化论的观点,比较解剖学的手法,论述了脊椎动物在漫长的时间里,由水生到陆生、由简单到复杂、由低等到高等,按一定的顺序发展和演变的规律。

The Structural Succession of the Vertebrate From Hydrophilous to Terricolous

Along with the change from hydrophilous to terricolous environment ,the Vertebrate changes from cyclostomate ,Pisces ,Amphibia ,Reptilia,Aves toMammalia.And the body structure changes greatly.In this paper,according to the skin of the Vertebrate,Respiratory system.,Circulatory system,Nervous system and sense organ,skeletal system and so on,the pointview of transformism,we dissertate the succession rule of the vertebrate from hydrophilous to terricolous,from simplicity to complesity,from low\|grade to high\|grade,in a certain sequence in the long time.