Arthopoda are invertebrate animals having an exoskeleton, a segmented body, and jointed appendages. The common group of animals found in this phylum are arthropods. Arthropods are characterized by their jointed limbs and cuticles which are made of chitin. They range in size from microscopic plankton up to forms a few meters long. The urinary system in arthropods vary depending on their environment as long as there subphylum.
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Paralithodes- Californiensis (KIng Crab)
King crabs are part of the subphylum of crustaceans. Crabs don't urinate in the typical sense. Waste from nitrogen metabolism is not concentrated into a urinary bladder like mammals; aquatic crustaceans are able to dissolve wastes directly into the water through their gills.
King crabs are part of the subphylum of crustaceans. Crabs don't urinate in the typical sense. Waste from nitrogen metabolism is not concentrated into a urinary bladder like mammals; aquatic crustaceans are able to dissolve wastes directly into the water through their gills.
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Fire Ant
Fire ants are part of the subphylum of insects. In fire ants body fluids are drawn into the Malphigian Tubules by osmosis due to large concentrations of potassium inside the tubule. Body fluids then pass back into the body, nitrogenous wastes empty into the insect's gut. Water is reabsorbed and waste is expelled from the insect's rectum.
Fire ants are part of the subphylum of insects. In fire ants body fluids are drawn into the Malphigian Tubules by osmosis due to large concentrations of potassium inside the tubule. Body fluids then pass back into the body, nitrogenous wastes empty into the insect's gut. Water is reabsorbed and waste is expelled from the insect's rectum.
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Tarantula
Tarantulas belong to the subphylum of arachnids. Tarantulas have structures designed to get rid of nitrogenous waste. These are called malphigian tubules and function in a manner similar to our own
kidneys. Tarantulas don't produce urine like we do, but produce uric acid, which doesn't dissolve in water and is a near-solid. Tarantulas have this alternate form of waste because they can't afford to lose as much water as we do. The uric acid then drains into stercoral pocket where from there is expelled out of the rectum.
Tarantulas belong to the subphylum of arachnids. Tarantulas have structures designed to get rid of nitrogenous waste. These are called malphigian tubules and function in a manner similar to our own
kidneys. Tarantulas don't produce urine like we do, but produce uric acid, which doesn't dissolve in water and is a near-solid. Tarantulas have this alternate form of waste because they can't afford to lose as much water as we do. The uric acid then drains into stercoral pocket where from there is expelled out of the rectum.