secondary lamella
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Lamella (zoology) — A lamella is a thin plate like structure, often one amongst many lamellae very close to one another, with open space between. Aside from respiratory organs, they appear in other biological roles including filter feeding, the traction surfaces of… … Wikipedia
lamella — (plural lamellae)) a layer, a thin plate, e.g. the plates in the sucking disc on the head of Echeneidae; in gills the transverse vertical plate on the gill filaments through which capillaries run (sometimes called secondary lamellae) … Dictionary of ichthyology
Middle lamella — The middle lamella is a pectin layer which cements the cell walls of two adjoining cells together. Plants need this to give them stability and so that they can form plasmodesmata between the cells. It is the first formed layer which is deposited… … Wikipedia
middle lamella — noun : a layer of intercellular material that as seen by conventional staining and microscopic techniques lies between the apparent walls of adjacent plant cells * * * Bot. the layer of cementing material, composed of pectates and similar… … Useful english dictionary
gill lamella — (plural gill lamellae)) the transverse vertical platelet on the gill filament, through which capillaries run. The primary gill lamellae carry numerous fine layers called secondary lamellae which are the actual regions of respiration and excretion … Dictionary of ichthyology
Cell wall — A cell wall is a tough, flexible and sometimes fairly rigid layer surrounding a cell, located external to the cell membrane, which provides the cell with structural support, protection, and acts as a filtering mechanism. A major function of the… … Wikipedia
Nucleus — 1) In cell biology, the structure that houses the chromosomes. 2) In neuroanatomy, a group of nerve cells. * * * 1. In cytology, typically a rounded or oval mass of protoplasm within the cytoplasm of a plant or animal cell; it is surrounded by a… … Medical dictionary
Tissue (biology) — This article is about biological tissue. For other uses, see Tissue. Cross section of sclerenchyma fibers in plant ground tissue … Wikipedia
Casparian strip — In plant anatomy, the Casparian strip is a band of Cell wall material in the radial and transverse walls of the endodermis, which is chemically different from the rest of the cell wall. It is used to block the passive flow of materials, such as… … Wikipedia
cell — cell1 cell like, adj. /sel/, n. 1. a small room, as in a convent or prison. 2. any of various small compartments or bounded areas forming part of a whole. 3. a small group acting as a unit within a larger organization: a local cell of the… … Universalium
