Fish Gills Not all animals have lungs. Many animals embody in environments where lungs would be efficient enough for survival. Gills are another(prenominal) type of respiratory system, which are very efficient at removing oxygen from water: there is only 1/20 the amount 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 black market to the attached gill filaments.
The arches are a rigid stucture which take into account support and protection for the attached lamellae. There are unremarkably two types of filaments, which are attached, primary and secondary. Primary lamellae (or gill filaments) incline perpendicular from the gill arch. The filaments are located close unneurotic arranged in rows extending from both si...If you want to get a full essay, order it on our website:
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