Answers:
Leeches be originally used to draw infected blood out of a wound or sore and/or to treat soaring blood pressure. Unfortunately, deeply of barbers have no notion of what they be doing and assumed that any weakness needed to be treated by bleeding the forgiving to a greater or substandard level (lawyers and doctors still do this today, but merely next to respect to money).
That's why the symbol of a barber is a red-striped pole. It be an hoarding within illiterate times representing the blood and the verbs cloths/bandages that the barber used contained by his trade.
For thousands of years, leeches enjoy be worming their process surrounded by and out of tablets as a questionable cure for anything from headache to gangrene, reaching their distance from the ground of medicinal use in the mid-1800s. Today, the slimy adjectives creatures are making a comeback as a legal treatment that can relief make well skin graft and restore blood circulation. Their primary function is to drain blood. Pooled blood around a wound can threaten tissue survival
To eat infection and doomed to failure tissue down to the stout tissue.
Clean the blood when here is an infection.
After they are done you can hear them whisper "it taste approaching chicken"
I don't know much in the region of it, some, but nearby's sites on it. Here's one of them:
http://www.leeches.us/
To this afternoon, they are used to stimulate wound areas beside poor circulation. They excrete a chemical which prevents local clotting and so ensure circulation short promoting "bleed outs" in other parts of the body, which is what would start if you took full-size amounts of generalized anti blood clotting drugs.
One of the most handy applications is beside upper limb re-attachments.
However, after they're done drinking, the leeches are regard as medical dribble away and are kill.