水螅型

水螅型，體型呈圓柱形，基部附於其他物體，體表還被復著外胚層細胞分泌的角質膜，大量刺細胞，有防禦和捕食功能。

基本信息

• 中文學名：水螅型
• 界：動物界
• 體徵：圓柱形

簡介

腔腸動物的

水螅型

一種體型.呈圓柱形，基部附於其他物體，另一端游離，周圍有若干觸手.簡單的水螅型個體中，觸手圍著隆起的垂唇，垂唇中央為口，消化腔簡單.有些種類體表還被復著外胚層細胞分泌的角質膜.珊瑚綱的水螅型構造較複雜，游離端稱口盤，沒有明顯的垂唇，口盤周圍有許多觸手.口部外胚層陷入成口道.消化腔內有若干寬、窄不同的隔膜，最寬的隔膜，其內端和口道相連，其餘隔膜內端為隔膜絲，游離於消化腔內.有的隔膜絲在消化腔底部形成游離的毒絲，含大量刺細胞，有防禦和捕食功能.

英文翻譯

:A coelenterate body. Was cylindrical, the base attached to other objects, the other end free, surrounded by a number of tentacles. Simple hydra-type individuals, the tentacles around the uplift of the hanging of the lips, vertical lip of the Central for the mouth, digestive cavity Simple. Some species are also re-surface of the ectodermal cells to secrete cuticle. Anthozoa of the hydra-type structure is more complex free-end, said port plate, there is no obvious vertical lips, mouth plate surrounded by a number of tentacles. mouth ectoderm caught into the Hau Road. digestive cavity a number of wide and narrow divide different, the most wide membrane, its inner end and Hau Road, connected to the rest of the inner end of the diaphragm membrane silk, divorced from digestive cavity. some wire in the digestive membranes cavity at the bottom of the formation of toxic free silk, containing a large number of stinging cells, there is defense and predatory function.