东方白鹳脑与鸭脑和鹅脑的比较解剖

通过解剖学分析，发现东方白鹳脑的一些明显的特点。东方白鹳全脑的外形略大于鹅脑，明显大于鸭脑。脑的平均全长为４４．１ｍｍ，宽平均为３６．１ｍｍ。大脑宽而短；脑谷直而长，并一直延伸到嗅球的外侧缘。大脑背侧的矢状隆凸贯穿整个大脑半球的全长。小脑很发达，明显地呈前后方向扩展，长度和宽度都明著地大于鸭和鹅的小脑。东方白鹳中脑的视叶特别发达，平均长度为１４．５ｍｍ，宽９．１ｍｍ，明显大于鹅脑和鸭脑的树叶；视囊也相当发达，宽达９．３７ｍｍ，比鹅的和鸭的视囊粗大得多。研究结果表明：东方白鹳具有发达的视觉神经中柩和强大的飞行调节中柩，其脑的形态学特点与其生理功能是完全相符的（本文重点研究东方白鹳脑的外形结构）。

THE COMPARATIVE ANATOMY OF THE BRAINS OF ORIENTAL WHITE STORK, DUCK AND GOOSE

The brains of adult oriental white stork, duck and goose have been Studied by means of compararive neuroanatomy . some outstanding characteristics are discovered. The brain of the Oriental white stork is bigger than those of the duck and goose. The average length of the whole brain is 44.10mm, the width is 36.10mm. The cerebrum is much wider but shorter than that of the duck and goose.The telencephalic vallicule is much longer, and it extends to the lateral side of the olfactory bulb directly. The sagittal eminence spreads out of full length of the dorsal cerebrum. The cerebellum is well-developed,it extremely enlarged to the anterior and posterior ends. The length and the width of the cerebellum are remarkablv larger than that of the duck and goose. The midbrain is also well-developed, especially the optic lobe. The average length of the optic lobe is 14.50mm, the width is 9.10mm, Both of these data are considrably targer than those of the duck and goose. The optic tract is very thick, the width is 8.37mm.The results of this study suggested that the oriental white stork has a well-developed optic nervous center and a strong regulator nervous center of flying. Its morphological characteristics and the physiological function arc completely correspondence.