常見(jiàn)例句Morphology of a Simple Sponge. (a) In this example, pinacocytes form the outer body wall, and mesenchyme cells and spicules are in the mesohyl. 由於鞭毛擺動(dòng)引起水流通過(guò)海緜躰，獲得食物顆粒和氧。 返回 pinacocytes