Leech

TITLE Hirudo Therapy on Sinusitis Patients in Perak. 2.0 INTRODUCTION BACKGROUND The common name for distributively of the annelids (segmented worms) is leech, comprising the subclass (or class) Hirudinea. They wear a footling sucker on the lavonical (mouth) end of the cylindrical or somewhat dorso-ventrally flattened body, and a larger sucker on the posterior end.1 Leeches be more than often than not aquatic and live in freshwater environments, but in that obligingness too argon everyday and marine species. Most leeches ar maraudery. They feed on a variety of invertebrates, such as worms, snails, insect larvae, and crustaceans. However, some ar parasitic family-sucking leeches, feeding on the blood of vertebrates, such as amphibians, reptiles, waterfowl, fish, and mammals (including humans), as well as mollusks. In addition, some leeches ar detritivores, that feeds on dead and decomposing positive fertiliser matter.2. Hemophagic leeches (feeding on blood) grab to their legions and remain there until they exit full, at which point they feed off to digest. They all have an previous (oral) sucker create from the first six segments of their body, which is apply to bring together to a host for feeding, and rotter also release an anaesthetic(a) to prevent the host from noticing the leech.

They use a gang of mucous secretion and suction (caused by concentric muscles in those six segments) to carry on attached and secrete an anti-clotting enzyme into the hosts blood stream.3. Leeches provide values to the ecosystem and to humans. Ecologically, they are important in set and stream food chains, hatful as both predator and prey according to the life sentence cycle. Among the predators of leeches are fish, crayfish, turtles, birds, frogs, and even dragonflies and damselflies.4. For humans, the hemophagic leeches can be used medically, for example, in controlling swelling, as it produces chemicals, that is Hirudin that can serve as an anesthetic(a) and prevent blood coagulation. The healthful leech, Hirudo...If you want to get a full essay, order it on our website: Orderessay

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