Online Dictionary of Invertebrate Zoology: Complete Work - Best Text

Online Dictionary of Invertebrate Zoology 145ovisac or marsupium.broom shaped see besomiformbrown bodies 1. (ANN: Oligochaeta) Spheroidal, ellipsoidal ordiscoidal masses, free in the coelomic cavities, containingcorpuscles or brown debris, setae, cysts of parasites,nematodes and various other foreign bodies. 2. (BRYO) InStenolaemata and Gymnolaemata, an encapsulated massof degenerating cells from the lophophore, gut, musclesand other nonskeletal parts of a zooid, retained in the bodycavity or expelled after regeneration of feeding and digestiveorgans. see brown deposit. 3. (ECHINOD: Holothuroidea)Small clumps of amoebocytes, parasites and otherejecta found in the coelom.brown deposit (BRYO: Stenolaemata) Granular deposits of ironoxide or pyrite believed to be fossilized organic material oforgans or brown bodies of degenerated organs.brownian movement The continual vibratory movement ofsmall particles dispersed in a fluid medium, as a result ofbombardment by the molecules of the medium.Brunner's organ (ARTHRO: Insecta) A soft tubercle at the baseof the hind femur of grasshoppers, against which the caudaltibiae press when at rest.brush border Projections of microvilli free on the surface ofepithelial cells that produce a brush-like appearance.brushes n.pl. [OF. broisse, brushwood] 1. A cluster of bristles,stout hairs or scales. 2. (ARTHRO: Insecta) a. In Diptera,anterior "mouth bristles" of some mosquitoe larvae, thatmay or may not be prehensile; posterior or respiratory siphonarea bristles. b. In Lepidoptera, anterior pheromonehair-like scales of noctuid moths, or posterior abdominalbrush of smooth hairs, function unknown.brush-organs (ARTHRO: Insecta) In male Lepidoptera, anteriorphermone-producing paired glands, storage organs anddistributive brushes functioning to elaborate and dispersesex attractants.brustia (ARTHRO: Insecta) Small spines or setae on the mandibles.Bryozoa, bryozoans n.; n.pl. [Gr. bryon, moss; zoon, animal]