dorsal lip
noun Date: 1924 the margin of the fold of blastula wall that delineates the dorsal limit of the blastopore, constitutes the primary organizer, and forms the point of origin of chordamesoderm

New Collegiate Dictionary. 2001.

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  • dorsal lip — n the margin of the fold of blastula wall that delineates the dorsal limit of the blastopore, constitutes the primary organizer, and forms the point of origin of chordamesoderm …   Medical dictionary

  • dorsal lip — n. that part of the rim of the blastopore that lies on the future dorsal side of the embryo: in vertebrates it contains the organizer that determines the position of the future nerve cord …   English World dictionary

  • dorsal lip — dor′sal lip′ n. dvl the dorsal marginal region of the blastopore, which acts as a center of differentiation • Etymology: 1935–40 …   From formal English to slang

  • dorsal lip — noun : the margin of the fold of blastula wall that delineates the dorsal limit of the blastopore in the gastrulating amphibian embryo or corresponds to this in other vertebrate embryos and that constitutes the primary organizer, is essential to… …   Useful english dictionary

  • dorsal lip — Embryol. the dorsal marginal region of the blastopore, which acts as a center of differentiation: as cells move through this region to the interior of the embryo during gastrulation, they acquire the ability to induce the overlying ectoderm to… …   Universalium

  • dorsal lip — 1. (G.T.). 2. (ARTHROPODA: Insecta) In Coccoidea, a chitinized plate supporting the anal tube …   Dictionary of invertebrate zoology

  • dorsal lip region — 1. the mesodermal tissue around the dorsal lip of the blastopore of an amphibian. 2. an analogous region in the human embryo that serves as the organizer which by induction initiates and controls early development …   Medical dictionary

  • Dorsal stream — The dorsal stream is a pathway for visual information that flows through the visual cortex, the part of the brain which provides visual processing. It is often believed to be involved in the guidance of actions and recognizing where objects are… …   Wikipedia

  • Regional specification — In the field of developmental biology, regional specification is the process by which different areas are identified in the development of the early embryo. The process by which the cells become specified differs between organisms. Contents 1… …   Wikipedia

  • animal development — Introduction  the processes that lead eventually to the formation of a new animal starting from cells derived from one or more parent individuals. Development thus occurs following the process by which a new generation of organisms is produced by …   Universalium

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