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The common octopus (Octopus vulgaris) is a mollusk belonging to the class Cephalopoda. Octopus vulgaris is one of the most studied of all octopus species, and also one of the most intelligent. It ranges from the eastern Atlantic, extends from the Mediterranean Sea and the southern coast of England , to the southern coast of South Africa.
Female argonaut octopus (Argonauta spp.) dip their paper-like shell into the air, trapping gas bubbles that they then use to maintain buoyancy. [ 66 ] [ 67 ] Diverse flying squid species in the Ommastrephidae and Onychoteuthidae can launch themselves from the water and soar for impressive distances, some can reach highs of over three metres and ...
Ostrich_Respiratory_Anatomy.png: Knut Schmidt-Neilsen (original uploader Anchalkanwar) derivative work: Begoon This is a retouched picture , which means that it has been digitally altered from its original version.
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.
Although the respiratory function of hemocyanin is similar to that of hemoglobin, there are a significant number of differences in its molecular structure and mechanism. Whereas hemoglobin carries its iron atoms in porphyrin rings (heme groups), the copper atoms of hemocyanin are bound as prosthetic groups coordinated by histidine residues.
A lot of changes in upper respiratory tract and head: 19:27, 13 December 2007: 800 × 900 (330 KB) LadyofHats {{Information |Description=numbered version of Image:Respiratory system complete.svg |Source=self-made |Date=dec 2007 |Author= LadyofHats |Permission=Public domain |other_versions=<gallery> Image:Respiratory system complete.svg|en
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 ...
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 ]