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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 effect is not present.

Contents

The siphon as an organ in animals

The term "siphon" in human anatomy

Other contexts

The siphon as an organ in animals

★ Many aquatic mollusks have an organ called a 'siphon' or hyponome through which water is sucked in and out, either for filter-feeding or to provide oxygen.

★ The larvae of several kinds of insects, including mosquitoes, tabanid flies, and Belostomatidae) live in the water and breathe through a tubular organ called a 'siphon' (which functions as a snorkel).

★ Some adult insects which spend considerable time underwater, such as the water scorpion, have an abdominal breathing tube that is also called a 'siphon'.

The term "siphon" in human anatomy

★ A portion of the human internal carotid artery running through the cavernous sinus is called the carotid siphon because of its shape.

Other contexts

★ A siphon gourd has a long curved neck, shaped like a siphon.