Fish Gills Not all animals have lungs. Many animals sustain in environments where lungs would be efficient enough for survival. Gills are another(prenominal) example of respiratory system, which are very efficient at removing type O from water: there is only 1/20 the amount of money of oxygen present in water as in the same volume of air. Gills greatly increase the get up area for gas exchange and they occur in a variety of animal groups including arthropods (including some terrestrial crustaceans), annelids, fish, and amphibians. Gills are typically comprised of a gill arch, which contain veins and arteries that supply blood calamitous market to the attached gill filaments.
The arches are a starchy stucture which take into account support and protection for the attached lamellae. on that point are unremarkably two types of filaments, which are attached, primary and secondary. particular lamellae (or gill filaments) incline perpendicular from the gill arch. The filaments are set(p) close unneurotic arranged in rows extending from both si...If you privation to get a full essay, order it on our website:
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