Siphon (biology)
The term siphon is used for a number of biological structures, either because flowing liquids are involved, or because the object is shaped like a siphon. In these structures, the physical phenomenon known as the siphon
The word siphon is sometimes used to refer to a wide variety of devices that involve the flow of liquids through tubes. But in the English language today, the word siphon usually refers to a tube in an inverted U shape which causes a liquid to flow uphill, above the surface of the reservoir,...

 effect is not present.
  • Siphon (insect anatomy)
    Siphon (insect anatomy)
    A siphon is a tubular organ of the respiratory system of some insects that spend a significant amount of their time underwater, that serves as a breathing tube....

  • Siphon (mollusc), an organ of many aquatic molluscs through which water (or air) flows
  • Oral siphon of Urochordata
  • Carotid siphon, a portion of the human internal carotid artery
    Internal carotid artery
    In human anatomy, the internal carotid arteries are two major arteries, one on each side of the head and neck. They arise from the common carotid arteries where these bifurcate into the internal and external carotid artery, and they supply the brain....

     running through the cavernous sinus
    Cavernous sinus
    The cavernous sinus , within the human head, is a large collection of thin-walled veins creating a cavity bordered by the temporal bone of the skull and the sphenoid bone, lateral to the sella turcica.-Contents:...

    , called siphon because of its shape
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