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A ctenidium is a respiratory organ or gill which is found in many molluscs. This structure exists in bivalves , cephalopods , polyplacophorans (chitons), and in aquatic gastropods such as freshwater snails and marine snails . [ 1 ]
A siphon is an anatomical structure which is part of the body of aquatic molluscs in three classes: Gastropoda, Bivalvia and Cephalopoda (members of these classes include saltwater and freshwater snails, clams, octopus, squid and relatives). Siphons in molluscs are tube-like structures in which water (or, more rarely, air) flows.
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The tracheal system branches into progressively smaller tubes, here supplying the crop of the cockroach. Scale bar, 2.0 mm. One type of invertebrate respiratory system is the open respiratory system composed of spiracles, tracheae, and tracheoles that terrestrial arthropods have to transport metabolic gases to and from tissues. [22]
Download as PDF; Printable version; In other projects Wikidata item; ... Pages in category "Invertebrate respiratory system" The following 9 pages are in this ...
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[[Category:Respiratory system templates]] to the <includeonly> section at the bottom of that page. Otherwise, add <noinclude>[[Category:Respiratory system templates]]</noinclude> to the end of the template code, making sure it starts on the same line as the code's last character.
A bigfin reef squid displaying considerably developed ocular, locomotive, and bioluminescent organs, all particularly of interest to the malacological study of its class Cephalopoda. Malacology [ a ] is the branch of invertebrate zoology that deals with the study of the Mollusca (molluscs or mollusks), the second-largest phylum of animals in ...