Online Dictionary of Invertebrate Zoology: Complete Work - Best Text

Online Dictionary of Invertebrate Zoology 177to the periphery to proceed with superficial cleavage, withthe yolk remaining central. see isolecithal egg,mesolecithal egg, telolecithal egg.centromere n. [Gr. kentron, center; meros, part] The part onthe chromosome where it becomes attached to the spindle.centrophormium n. [Gr. kentron, center; phormis, basket]Round basket-like Golgi bodies.centroplasm see centrosomecentrosome n. [Gr. kentron, center; soma, body] A specializedarea of condensed cytoplasm that contains the centrioles atthe beginning of mitosis; also called centrosphere, cytocentrum,microcentrum, attraction sphere, and paranuclearbody.centrosphere see centrosomecentrotylote a. [Gr. kentron, center; tylos, knob] (PORIF) Indiactinal monoaxons, having the knob near the middle ofthe shaft of a spicule.centrum n.; pl. -trums [Gr. kentron, center] A center or centralmass.cephalad adv. [Gr. kephale, head; L. ad, toward] Toward thehead or anterior end; rostrad. see caudad.cephalaria n. [Gr. kephale, head; -aria, a thing like] (ARTHRO:Insecta) In a generalized insect, the alaria present on eachlateral margin of the prescutum anterior to the prephragma.cephalate a. [Gr. kephale, head] Having a head or head-likestructure.cephaletron n. [Gr. kephale, head; etron, belly] (ARTHRO:Chelicerata) The anterior body region of Limulidae, thehorseshoe crabs.cephalic a. [Gr. kephale, head] Pertaining to the head or anteriorend.cephalic bristles (ARTHRO: Insecta) In Diptera, specializedbristles occurring on the head.cephalic cage (ANN: Polychaeta) Long forwardly directed setaeencircling the mouth.