Online Dictionary of Invertebrate Zoology: Complete Work - Best Text

592Maggenti and Gardnermycotoxin n. [Gr. mykes, fungus; toxikon, poison] A low molecularweight metabolite of fungi which is poisonous toanimals.myelin sheath A fatty material surrounding a nerve fiber.myiasis n. [Gr. myia, fly; -iasis, morbid condition] A conditionderiving from invasion by dipterous larvae.myoblast n. [Gr. mys, muscle; blastos, bud] A cell that producesmuscular fiber.myochordotonal organ (ARTHRO: Crustacea) In Decapoda, aproprioceptor at the proximal end of the meropodite, a flatmembrane lying between the skeleton and sheath of theaccessory flexor muscle of the carpus, with distal bipolarsensory cells passing through the membrane and attachedto the skeleton; having scolopidia similar to the insectchordotonal organs.myocytes n.pl. [Gr. mys, muscle; kytos, container] (PORIF)Cells that cause contraction.myoepithelial n. [Gr. mys, muscle; epi, upon; thele, nipple] 1.(BRYO) A contractile ectodermal cell with intracellular striatedmuscles. 2. (CNID) Epithelium with a longitudinal contractilefiber at the base; epitheliomuscular.myofibrillae, myofibrils n.pl; sing. -a [Gr. mys, muscle; dim.fibra, fiber] Longitudinal fibrils of muscle cells.myogenic a. [Gr. mys, muscle; gennaein, to produce] Pertainsto a muscle contraction initiated by nerve impulse. seeneurogenic.myoglobin n. [Gr. mys, muscle; L. globus, ball] A type of hemoglobinoccurring in muscle cells concerned with oxygentransport and storage; also called myohemoglobin.myohematin, myohaematin n. [Gr. mys, muscle; haima,blood] An iron pigment said to occur in muscles; thought tobe a cytochrome.myoid a. [Gr. mys, muscle; eidos, like] Composed of musclefibers.myology n. [Gr. mys, muscle; logos, discourse] That branch ofanatomy dealing with the arrangement of muscles.myomere n. [Gr. mys, muscle; meros, part] A muscular seg-