采用大体解剖和组织学方法对非洲雏鸵鸟呼吸器官的形态特征进行了研究。结果显示:雏鸵鸟硬腭黏膜较光滑,表面乳头分布较少;鼻后孔咽部开口内侧有1对黏膜皱褶;杓状软骨较宽,边缘呈锯齿状,与环状软骨愈合;气管黏膜上皮杯状细胞较少,固有膜为一层致密结缔组织,可见少量淋巴细胞分布;气管软骨呈“C”字型;支气管软骨为5~6个软骨片;肺房排列方式不是以三级支气管为中心的辐射状排列,呼吸毛细管间血管丰富。观察结果表明,雏鸵鸟呼吸器官结构比较独特,发育相对不完善。
The morphological characteristics of the respiratory organs in African ostrich chicks were observed by the means of gross anatomy and histology. The results showed that mucosa of palatum durum are smooth,on which the papillae distribute fewly;A couple of mucosa reductus were discovered in the ringent wall of choanae which situated in pharyngeal portion; The broad and serration marginal arytenoid cartilage is concrescent with annular cartilage;The trachea rnucosa,with the small quantitative goblet cell in epithelium,the presence of small amount homeocyte in its lamina propria which is a layer of dense connective tissue, the cartilagines tracheales present with the shape of ‘C' ;5 to 6 pieces of cartilage flap are composed of bronchial cartilage;the atrium are small,which did not lay out radiatively with the center of parabronchus, plenty of blood vessel situate in the respiration capillary. These results indicated that the inspiratory organs in ostrich chicks is not mature,its structure is more peculiar.