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Gills or gill-like organs, located in different parts of the body, are found in various groups of aquatic animals, including mollusks, crustaceans, insects, fish, and amphibians. Semiterrestrial marine animals such as crabs and mudskippers have gill chambers in which they store water, enabling them to use the dissolved oxygen when they are on land.
The sea slug Pleurobranchaea meckelii respires using a gill which is visible in this view of the right side of the animal. In gastropods in many ancient lineages, the gills are bipectinate, having an overall shape that is similar to a bird's feather, with narrow filaments projecting either side of a central stalk.
Rumors that San Luis Obispo County school districts are placing litter boxes in restrooms to accommodate students who identify as “furries” are false, school district administrators say.
The respiratory system (also respiratory apparatus, ventilatory system) is a biological system consisting of specific organs and structures used for gas exchange in animals and plants. The anatomy and physiology that make this happen varies greatly, depending on the size of the organism, the environment in which it lives and its evolutionary ...
Aquatic animals generally conduct gas exchange in water by extracting dissolved oxygen via specialised respiratory organs called gills, through the skin or across enteral mucosae, although some are evolved from terrestrial ancestors that re-adapted to aquatic environments (e.g. marine reptiles and marine mammals), in which case they actually ...
The use of animals in laboratories remains controversial. Animal welfare advocates push for enforced standards to ensure the health and safety of those animals used for tests. In the US, every institution that uses vertebrate animals for federally funded laboratory research must have an Institutional Animal Care and Use Committee (IACUC). [91]
The dealers then sell the animals to universities, medical and veterinary schools, and companies providing animal-testing services. Lawrence Salinger and Patricia Teddlie of Arkansas State University told the conference that these institutions pay up to $500 for a stolen animal, who is often accompanied by forged documents and fake health ...
Enteral respiration, also referred to as cloacal respiration or intestinal respiration, [1] is a form of respiration in which gas exchange occurs across the epithelia of the enteral system, usually in the caudal cavity ().