undulating membrane


un·du·lat·ing mem·brane

, undulatory membranea locomotory organelle of certain flagellate (trypanosome and trichomonad) parasites, consisting of a finlike extension of the limiting membrane with the flagellar sheath; wavelike rippling of the undulating membrane produces a characteristic movement.

un·du·lat·ing mem·brane

, undulatory membrane (ŭn'dyū-lāt'ing mem'brān, ŭn'dyū-lă-tōr'ē) A locomotory organelle of certain flagellate (trypanosome and trichomonad) parasites, consisting of a finlike extension of the limiting membrane with the flagellar sheath; wavelike rippling of the undulating membrane produces a characteristic movement.