undulating membrane — noun : a vibratile cytoplasmic membrane: a. : a lateral expansion of the periplast in some flagellates that is usually bordered by a flagellum b. : a row of laterally fused long cilia associated in many ciliates with the oral structures … Useful english dictionary
membrane — 1. A thin sheet or layer of pliable tissue, serving as a covering or envelope of a part, as the lining of a cavity, as a partition or septum, or to connect two structures. SYN: membrana [TA]. 2. SYN: biomembrane. [L. membrana, a skin or m … Medical dictionary
paroral membrane — in certain ciliate protozoa, a movable membrane like sheet(s) formed by fusion of the bases of a longitudinal row of cilia that borders the right side of the buccal cavity; it serves to gather food and push it toward the cytostome. Called also… … Medical dictionary
protozoan — /proh teuh zoh euhn/, n., pl. protozoans, (esp. collectively) protozoa / zoh euh/, adj. Biol. n. 1. any of a diverse group of eukaryotes, of the kingdom Protista, that are primarily unicellular, existing singly or aggregating into colonies, are… … Universalium
trichomonad — trichomonadal /trik euh mon euh dl, moh neuh /, trichomonal /trik euh mon l, mohn l, tri kom euh nl/, adj. /trik euh mon ad, moh nad/, n. any flagellate protozoan of the genus Trichomonas, parasitic in humans or animals. [1860 65; < NL… … Universalium
Trichomonas — A genus of parasitic protozoan flagellates (subfamily Trichomonidinae, family Trichomonadidae) causing trichomoniasis in humans, other primates, and birds. Specificity is more marked for its precise microhabitat than for host species. The genus… … Medical dictionary
Trypanosoma — A genus of asexual digenetic protozoan flagellates (family Trypanosomatidae) that have a spindle shaped body with an undulating membrane on one side, a single anterior flagellum, and a kinetoplast … Medical dictionary
costa — 1. [TA] [I–XII]. SYN: rib [I–XII]. 2. A rodlike internal supporting organelle that runs along the base of the undulating membrane of certain flagellate parasites such as Trichomonas. SYN: basal rod. [L.] c. cervicalis [TA] SYN: cervical rib.… … Medical dictionary
epimastigote — Term replacing “crithidial stage,” to avoid confusion with the insect parasitizing flagellates of the genus Crithidia. In the e. stage the flagellum arises from the kinetoplast alongside the nucleus and emerges from the anterior end of the… … Medical dictionary
opisthomastigote — Term now used instead of herpetomonad for the stage of development of certain insect and plant parasitizing flagellates to avoid confusion between the stage and the genus Herpetomonas. In this stage the flagellum arises from the kinetoplast… … Medical dictionary
