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Spiders obtain their oxygen through four respiratory organs located on the underside of their abdomens. These organs are arranged into two pairs, an anterior pair at the very front end of the abdomen, and a posterior pair behind the anterior pair.
Insects do have a respiratory system. The using organs called spiracles to introduce oxygen from the atmosphere into their bodies. These spiracles then let oxygen flow into thâ¦e tracheal system which is a system of tubes that delivers oxygen to the parts of the body where it is needed. 4 people found this useful.