Definition of Gill arches. Meaning of Gill arches. Synonyms of Gill arches

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Definition of Gill arches

Gill arches
Gill Gill, n. [Dan. gi[ae]lle, gelle; akin to Sw. g["a]l, Icel. gj["o]lnar gills; cf. AS. geagl, geahl, jaw.] 1. (Anat.) An organ for aquatic respiration; a branchia. Fishes perform respiration under water by the gills. --Ray. Note: Gills are usually lamellar or filamentous appendages, through which the blood circulates, and in which it is exposed to the action of the air contained in the water. In vertebrates they are appendages of the visceral arches on either side of the neck. In invertebrates they occupy various situations. 2. pl. (Bot.) The radiating, gill-shaped plates forming the under surface of a mushroom. 3. (Zo["o]l.) The fleshy flap that hangs below the beak of a fowl; a wattle. 4. The flesh under or about the chin. --Swift. 5. (Spinning) One of the combs of closely ranged steel pins which divide the ribbons of flax fiber or wool into fewer parallel filaments. [Prob. so called from F. aiguilles, needles. --Ure.] Gill arches, Gill bars. (Anat.) Same as Branchial arches. Gill clefts. (Anat.) Same as Branchial clefts. See under Branchial. Gill cover, Gill lid. See Operculum. Gill frame, or Gill head (Flax Manuf.), a spreader; a machine for subjecting flax to the action of gills. --Knight. Gill net, a flat net so suspended in the water that its meshes allow the heads of fish to pass, but catch in the gills when they seek to extricate themselves. Gill opening, or Gill slit (Anat.), an opening behind and below the head of most fishes, and some amphibians, by which the water from the gills is discharged. In most fishes there is a single opening on each side, but in the sharks and rays there are five, or more, on each side. Gill rakes, or Gill rakers (Anat.), horny filaments, or progresses, on the inside of the branchial arches of fishes, which help to prevent solid substances from being carried into gill cavities.

Meaning of Gill arches from wikipedia

- the second gill arches (the hyoid arches) develop into the hyomandibular complex (which supports the back of the jaw and the front of the gill series),...
- escaping. The gill arches of bony fish typically have no septum, so that the gills alone project from the arch, supported by individual gill rays. Some species...
- escaping. The gill arches of bony fish typically have no septum, so the gills alone project from the arch, supported by individual gill rays. Some species...
- each gill arch. Rakers are widely varied in number, spacing, and form. By preventing food particles from exiting the spaces between the gill arches, they...
- structures. In fish, the arches support the gills and are known as the branchial arches, or gill arches. In the human embryo, the arches are first seen during...
- two feet. All five gill arches have ossified ceratobranchialia with a triangular cross-section, the middle sections of the arches. The hypobranchials...
- that jaws are homologous to the gill arches. In jawless fishes a series of gills opened behind the mouth, and these gills became supported by cartilaginous...
- Gill slits are individual openings to gills, i.e., multiple gill arches, which lack a single outer cover. Such gills are characteristic of cartilaginous...
- the gill arches. As a result, oxygenated blood mostly goes to the anterior gill arches and the deoxygenated blood mostly goes to the posterior arches. African...
- Cymothoidae. It enters a fish through the gills. The female attaches to the tongue, while the male attaches to the gill arches beneath and behind the female. Females...