Hirudinea - Definition

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The term "hirudinea" signifies the class of species to which the leech belongs. Leeches are primarily parasites that live in humid environments. Their flat bodies are made up of two hearts and a sucker that enables them to latch on to organisms and feed off their blood. Leeches are used in medical practice, applied to wounds in order to accelerate blood drainage. Leeches possess anticoagulant, anti-inflammatory, and anesthetic properties in their saliva.