Definition of Nettling cell. Meaning of Nettling cell. Synonyms of Nettling cell

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Definition of Nettling cell

nettling cell
Lasso Lass"o (l[a^]s"s[-o]) n.; pl. Lassos (-s[=o]z). [Sp. lazo, L. laqueus. See Lace.] A rope or long thong of leather with, a running noose, used for catching horses, cattle, etc. Lasso cell (Zo["o]l.), one of a peculiar kind of defensive and offensive stinging cells, found in great numbers in all c[oe]lenterates, and in a few animals of other groups. They are most highly developed in the tentacles of jellyfishes, hydroids, and Actini[ae]. Each of these cells is filled with, fluid, and contains a long, slender, often barbed, hollow thread coiled up within it. When the cell contracts the thread is quickly ejected, being at the same time turned inside out. The thread is able to penetrate the flesh of various small, soft-bodied animals, and carries a subtle poison by which they are speedily paralyzed and killed. The threads, at the same time, hold the prey in position, attached to the tentacles. Some of the jellyfishes, as the Portuguese man-of-war, and Cyanea, are able to penetrate the human skin, and inflict painful stings in the same way. Called also nettling cell, cnida, cnidocell.
Nettling cell
Nettling Net"tling, p. pr. & a. Stinging; irritating. Nettling cell (Zo["o]l.), a lasso cell. See under Lasso.

Meaning of Nettling cell from wikipedia

- (jellyfish), the mesoglea also contains some muscle cells. Cnidocytes, the harpoon-like "nettle cells" that give the phylum Cnidaria its name. These appear...
- have stinging hairs (stinging nettles), these also have a point that easily breaks off, allowing the irritants in the cell below to enter through the skin...
- plant in the nettle family, Urticaceae. It also is an interesting specimen to demonstrate the metamorphosis of chloroplast (outward of cell) to amyloplasts...
- for outgrowths of the epidermal cell wall, usually of calcium carbonate, formed in a cellulose matrix in special cells called lithocysts, generally in...
- Cnidoscolus (Gk. knidē-nettle, skōlos-thorn, Latin urens-burning). The plant is locally known as 'bull nettle', 'spurge nettle', 'bringamosa' and 'mala...
- It can be divided into three types based on the nature of the cell walls. Parenchyma cells have thin primary walls and usually remain alive after they become...
- described urticaria as "knidosis" after the Gr**** word knido for nettle. The discovery of mast cells by Paul Ehrlich in 1879 brought urticaria and similar conditions...
- tissues. Cells or organizations of cells which produce a variety of secretions. The secreted substance may remain deposited within the secretory cell itself...
- telomerase is active only in germ cells, some types of stem cells such as embryonic stem cells, and certain white blood cells. Telomerase can be reactivated...
- and various lepidopteran caterpillars. Urtica is Latin for "nettle" (stinging nettles are in the genus Urtica), and bristles that urticate are characteristic...
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