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扬子鳄鼻腔上皮光学显微镜及扫描电镜观察
引用本文:吴孝彬,陈壁辉.扬子鳄鼻腔上皮光学显微镜及扫描电镜观察[J].动物学报,1992,38(2):118-123.
作者姓名:吴孝彬  陈壁辉
作者单位:安徽师范大学生物学系,安徽师范大学生物学系 芜湖 241000,芜湖 241000
摘    要:本文通过光镜和扫描电镜研究了爬行动物扬子鳄鼻腔上皮的组织学。结果表明:其嗅觉上皮的组成细胞类型与两栖类、鸟类和哺乳类基本相似,但嗅细胞纤毛形状则有所不同;扬子鳄与两栖类、鸟类嗅纤毛相似,呈丝状,而哺乳类嗅觉纤毛则呈棍棒状;据外,扬子鳄鼻腔不同部位可发现不同类型嗅纤毛,鸟兽则无此现象,扬子鳄嗅觉上皮的分布仅局限于鼻腔中部前甲区和鼻甲区狭小范围,而兽类嗅觉上皮一般分布较广;扬子鳄呼吸上皮下未见兽类具有的混合型粘液腺,也未见兽类用以温暖空气的静脉丛,这和扬子鳄属外温动物而兽类为恒温动物密切相关。

关 键 词:扬子鳄  鼻腔  组织学

LIGHT AND SCANNING ELECTRON MICROSCOPIC OBSERVATIONS ON THE NASAL CAVUM SURFACE OF THE CHINESE ALLIGATOR
WU XIAO-BIN CHEN BI-HUI.LIGHT AND SCANNING ELECTRON MICROSCOPIC OBSERVATIONS ON THE NASAL CAVUM SURFACE OF THE CHINESE ALLIGATOR[J].Acta Zoologica Sinica,1992,38(2):118-123.
Authors:WU XIAO-BIN CHEN BI-HUI
Abstract:The nasal cavum of Chinese Alligator was divided into the vestibulum anterior vertically and the cavum nasi proprium. There were three conchas in the cavum nasi proprium: the pre-concha anteriorly, the concha medially and the postconcha posteriorly. Two types of the epithelium lining the cavum nasi proprium were sensory olfactory epithelium and non-sensory respiratory epithelium. Three types of cells of the olfactory epithelium were sensory cells, susten-tacular cells and basals cells. The respiratory epithelium contained ciliated cells, goblet cells and basal cells.(1) The vestibulum was lined by stratified squmous epithelium, non sensory.(2) The end of vestibulum to the nasal latter of preconcha was underlain by the primitive sensory olfactory epithelium with Bowman's gland.(3) The concha was lined by more advanced olfactory epithelium with Bowman's gland.(4) The epithelium on non-sensory area were respiratory. In many forms, some areas of the respiratory epithelium were composed almost entirely of goblet cells, such as, the postconcha, the posterior of the nasal cavum, recesses and sinuses.(5) The glands connected with the nasal cavum were Bowman's glands, external nasal glands and unicellular glands, no Jacoobson's gland and medial nasal gland.
Keywords:Chinese Alligator  Nasal cavum  Histology    
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