美洲蟑螂第六腹神經節之研究

Study on the Sixth Abdominal Ganglion of American Cockroach

張穎文(Yin-Wen Chang) ； 張永達(Yung-Ta Chang) ； 林金盾(Jin-Tun Lin)

《師大生物學報》 28卷 (1993/06) Pp. 1-8

https://doi.org/10.29812/BBNTNU.199306.0001

摘要

本實驗使用染色法和生理實驗法，探討美洲蟑螂（Periplaneta americana）第六腹神經節的結構與功能。結果得知此神經節中的細胞體，共約有1000個，位置多偏於腹面和側面的表層，呈兩倒對稱。由一束腹神經索進入神經節的神經之細胞體，約有20－25個，直徑差異大，多分散於對側周圍；其纖維分枝多且複雜，主要集中在神經節的中央部位。尾毛受空氣流動的刺激時，從腹神經索和尾毛神經可同時紀錄誘發的神經衝動。生理實驗證明尾毛外側神經司運動，細胞體分佈於神經節中，每束約有5－10個。尾毛內側神經司感覺，其細胞體不在神經節中。本實驗證明第六腹神經節具有轉運尾毛興奮的生理功能。

關鍵字

美洲蟑螂 ； 第六腹神經節 ； 尾毛神經 ； 細胞體

並列摘要

The structure and function of the sixth abdominal ganglion of American cockroach Periplaneta americana were investigated by the staining and physiological methods. Results showed that the total number of stomata in this ganglion are about 1000. Their distributions are bilateral, symmetrical and mainly in the ventral and lateral cortex of the ganglion. The number of stomata of each ventral nerve cord into the sixth ganglion are about 20-25; their diameters are very various and located on the opposite site of the ganglionic periphery. Their fibers are complicatedly ramified and concentrated in the central area of the ganglion. When the air puff stimulated the cerci, the nervous responses were recorded from both the ventral nerve cord and the cereal nerves. Physiological results showed that the lateral cereal nerve are efferent; their stomata, about 5-10, are located in the ganglion. The medial cereal nerves is afferent; their stomata are not found in the ganglion. The present study shows that the sixth abdominal ganglion of American cockroach is able to relay the signals from the cerci.

並列關鍵字

Periplaneta americana ； the sixth abdominal ganglion ； cercal nerve ； stomata