What does gill slit mean?

Definitions for gill slit
gill slit

Here are all the possible meanings and translations of the word gill slit.

Princeton's WordNet

  1. gill slit, branchial cleft, gill cleftnoun

    one of a series of slit openings in the pharynxes of fishes and aquatic amphibians through which water passes

Wiktionary

  1. gill slitnoun

    An individual opening to gills, which lacks an operculum; characteristic of Cartilaginous fish such as sharks.

Freebase

  1. Gill slit

    Gill slits are individual openings to gills, i.e., multiple gill arches, which lack a single outer cover. Such gills are characteristic of cartilaginous fish such as sharks, and rays. Most of these have five pairs, but a few species have 6 or 7 pairs. Shark gill slits are not covered, but lie in a row behind the head. The anterior edge of a gill slit is motile, moving outward to allow water to exit, but closing to prevent reverse flow. This modified slit, called a spiracle, lies just behind the eye, which assists the shark with taking in water during respiration and plays a major role in bottom–dwelling sharks. Spiracles are reduced or missing in active pelagic sharks. While the shark is moving, water passes through the mouth and over the gills in a process known as "ram ventilation". While at rest, most sharks pump water over their gills to ensure a constant supply of oxygenated water. A small number of species have lost the ability to pump water through their gills and must swim without rest. These species are obligate ram ventilators and would presumably asphyxiate if unable to move. Obligate ram ventilation is also true of some pelagic bony fish species. In contrast, bony fishes have a single outer bony gill covering called an operculum.

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Numerology

  1. Chaldean Numerology

    The numerical value of gill slit in Chaldean Numerology is: 3

  2. Pythagorean Numerology

    The numerical value of gill slit in Pythagorean Numerology is: 1

Images & Illustrations of gill slit

  1. gill slitgill slitgill slitgill slitgill slit


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