Felt B T, Vande Berg J S
J Morphol. 1976 Nov;150(3):763-83. doi: 10.1002/jmor.1051500308.
The ultrastructure of a well studied insect chemosensory unit is presented in this report. Two separate lumina are present in this chemosensory unit, the trichogen and sensillar lumina. The fluid within the trichogen lumen exclusively bathes the dendritic terminals, and may be involved with the reception and/or modulation of environmental stimuli. Cytoplasmic extensions of the trichogen cell which line the trichogen lumen may be involved in the production of the cuticular sheath. The sensillar lumen is bordered by the tormogen and a sleeve cell, and is continuous with the unoccupied channel of the setal shaft. Functions for the various cellular components of the blowfly chemoreceptor sensillum are offered.
本报告展示了一个经过充分研究的昆虫化学感应单元的超微结构。该化学感应单元中有两个独立的腔，即毛原腔和感器腔。毛原腔内的液体专门浸润树突末梢，可能参与环境刺激的接收和/或调节。排列在毛原腔内的毛原细胞的细胞质延伸可能参与表皮鞘的形成。感器腔由端细胞和一个套细胞界定，并与刚毛轴的中空通道相连。文中还介绍了家蝇化学感受器感器各个细胞成分的功能。
