刺丝泡

刺丝泡纤毛纲 动物 表膜下的一种 细胞器.在 草履虫中，为许多垂直排列于表膜下的纺缍形构造.当虫体受到外界的化学、机械、电等的 刺激时，刺丝泡能突然释放出胶原性质的刺丝.一般认为草履虫的刺丝泡具防御功能.实际上，当草履虫受到其主要 捕食者 栉毛虫（Ｄｉｄｉｎｉｕｍ）的攻击时，刺丝泡并 无防御作用，其功能至今尚无定论.在有些捕食性 纤毛虫中（如栉毛虫），有另一类构造的刺丝泡，呈柱状，具厚膜，内有盘旋的刺丝.当遇到猎物时，刺丝从囊内翻出，使猎物麻醉并导致细胞溶解.栉毛虫的此类构造集中于 胞口附近.Cilia Gang animal under the surface membrane of a cell organelles. In the paramecium in for a number of vertically arranged on the surface membrane under the spindle-shaped structure. When the parasite by external chemical, mechanical, electrical stimulation, etc., the barbed wire foam can be a sudden release of collagen in the nature of barbed wire. paramecium's generally considered a defensive function trichocyst. In fact, when the paramecium are their main predators comb caterpillars (Didinium) of the attacks, no defensive role of the trichocyst, its function has not been determined. In some predatory ciliates (such as comb caterpillars), there is another type of barbed wire foam structure, was cylindrical, with thick, hovering inside the barbed wire. When confronted with prey, the Barbed wire pulls out from the capsule, so that prey anesthesia and lead to cell lysis. Chlamys caterpillars such construction focused on the cell near the entrance.