In leech-rich areas, if you stand still for a few minutes, you'll see leeches dropping from vegetation and moving toward you like inchworms. Terrestrial leeches are generally small (although they can get quite huge in some parts of the world) but will gorge themselves during a meal, gaining up to ten times their weight. Noun A person who preys or overly depends upon another, or who clings to another in an parasitic manner. Xf adsk2015 x64 keygen download. Her younger brother is a bit of a leech, always hanging around us and asking for money. Verb To cling to or overly depend upon another person in a parasitic manner, like a leech. Statistica 8 serial cd key crack free. She's always leeching off the work other people do in the. Aio keygen password free download.
Leeches are common in rainforests of Madagascar, mainland Africa, and Southeast Asia. Unlike leeches in other parts of the world, rainforest leeches live in leaf litter and vegetation -- they are not aquatic. They find their prey (you and other warm-blooded animals) by odor and sound vibrations. In leech-rich areas, if you stand still for a few minutes, you'll see leeches dropping from vegetation and moving toward you like inchworms.Leech Meaning
Terrestrial leeches are generally small (although they can get quite huge in some parts of the world) but will gorge themselves during a meal, gaining up to ten times their weight. The single feeding will be enough to sustain a leech for several months.
Leech Lake Fishing Report
The best protection against leeches is covering up and using insect repellent on clothing, although they are extremely persistent and invariably if you spend enough tromping around in the forest you will get leeched. Do not get overly concerned about a leech attack -- they carry no disease and there is low risk of causing significant blood loss. Leech bites do not hurt -- since they release an anaesthetic when they sink their teeth into your skin -- but they do bleed profusely. Leeches use an anticoagulant when they bite to facilitate the flow of blood from the wound.
Removing a leech
If you are bitten by a leech and are compelled to remove it before it has had its full (leeches drop off on their own when they are done feeding), you can do so by following these steps:
|
In the case that a leech invades an orifice like your nose, ear, or mouth you have a slightly more serious problem since the leach will expand as it fills with blood. If you have access to strong (drinkable) alcohol or hydrogen peroxide you can try gargling (if the leech is in your mouth). Worst case scenario you may have to puncture the leech with a sharp object.
Also found in: Dictionary, Thesaurus, Idioms, Encyclopedia.
Related to Leeches: Medicinal leeches
Leeches
Definition
Leeches are bloodsucking worms with segmented bodies. They belong to the same large classification of worms as earthworms and certain oceanic worms.
Leeches can primarily be found in freshwater lakes, ponds, or rivers. They range in size from 0.2 in (5 mm) to nearly 18 in (45 cm) and have two characteristic suckers located at either end of their bodies. Leeches consume the blood of a wide variety of animal hosts, ranging from fish to humans. To feed, a leech first attaches itself to the host using the suckers. One of these suckers surrounds the leech's mouth, which contains three sets of jaws that bite into the host's flesh, making a Y-shaped incision. As the leech begins to feed, its saliva releases chemicals that dilate blood vessels, thin the blood, and deaden the pain of the bite. Because of the saliva's effects, a person bitten by a leech may not even be aware of it until afterwards, when he or she sees the incision and the trickle of blood that is difficult to stop.
For centuries, leeches were a common tool of doctors, who believed that many diseases were the result of 'imbalances' in the body that could be stabilized by releasing blood. For example, leeches were sometimes attached to veins in the temples to treat headaches. Advances in medical knowledge led doctors to abandon bloodletting and the use of leeches in the mid-nineteenth century. In recent years, however, doctors have found a new purpose for leeches—helping to restore blood circulation to grafted or severely injured tissue.
Purpose
There are many occasions in medicine, mostly in surgery and trauma care, when blood accumulates and causes trouble. Leeches can be used to reduce the swelling of any tissue that is holding too much blood. This problem is most likely to occur in two situations:
- Trauma. Large blood clots resulting from trauma can threaten tissue survival by their size and pressure. Blood clots can also obstruct the patient's airway.
- Surgical procedures involving reattachment of severed body parts or tissue reconstruction following burns. In these situations it is difficult for the surgeon to make a route for blood to leave the affected part and return to the circulation. The hardest part of reattaching severed extremities like fingers, toes and ears is to reconnect the tiny veins. If the veins are not reconnected, blood will accumulate in the injured area. A similar situation occurs when plastic surgeons move large flaps of skin to replace skin lost to burns, trauma or radical surgery. The skin flaps often drain blood poorly, get congested, and begin to die. Leeches have come to the rescue in both situations.
Precautions
It is important to use only leeches that have been raised in the laboratory under sterile conditions in order to protect patients from infection. Therapeutic leeches belong to one of two species—Hirudo michaelseni or Hirudo medicinalis.
/https://public-media.si-cdn.com/filer/5c/ed/5cedc127-d5d5-435e-ae88-e070f3a84c52/42-59563573.jpg "Leech")
In leech-rich areas, if you stand still for a few minutes, you'll see leeches dropping from vegetation and moving toward you like inchworms. Terrestrial leeches are generally small (although they can get quite huge in some parts of the world) but will gorge themselves during a meal, gaining up to ten times their weight. Noun A person who preys or overly depends upon another, or who clings to another in an parasitic manner. Xf adsk2015 x64 keygen download. Her younger brother is a bit of a leech, always hanging around us and asking for money. Verb To cling to or overly depend upon another person in a parasitic manner, like a leech. Statistica 8 serial cd key crack free. She's always leeching off the work other people do in the. Aio keygen password free download.
Leeches are common in rainforests of Madagascar, mainland Africa, and Southeast Asia. Unlike leeches in other parts of the world, rainforest leeches live in leaf litter and vegetation -- they are not aquatic. They find their prey (you and other warm-blooded animals) by odor and sound vibrations. In leech-rich areas, if you stand still for a few minutes, you'll see leeches dropping from vegetation and moving toward you like inchworms.Leech Meaning
Terrestrial leeches are generally small (although they can get quite huge in some parts of the world) but will gorge themselves during a meal, gaining up to ten times their weight. The single feeding will be enough to sustain a leech for several months.
Leech Lake Fishing Report
The best protection against leeches is covering up and using insect repellent on clothing, although they are extremely persistent and invariably if you spend enough tromping around in the forest you will get leeched. Do not get overly concerned about a leech attack -- they carry no disease and there is low risk of causing significant blood loss. Leech bites do not hurt -- since they release an anaesthetic when they sink their teeth into your skin -- but they do bleed profusely. Leeches use an anticoagulant when they bite to facilitate the flow of blood from the wound.
Removing a leech
If you are bitten by a leech and are compelled to remove it before it has had its full (leeches drop off on their own when they are done feeding), you can do so by following these steps:
|
In the case that a leech invades an orifice like your nose, ear, or mouth you have a slightly more serious problem since the leach will expand as it fills with blood. If you have access to strong (drinkable) alcohol or hydrogen peroxide you can try gargling (if the leech is in your mouth). Worst case scenario you may have to puncture the leech with a sharp object.
Also found in: Dictionary, Thesaurus, Idioms, Encyclopedia.
Related to Leeches: Medicinal leeches
Leeches
Definition
Leeches are bloodsucking worms with segmented bodies. They belong to the same large classification of worms as earthworms and certain oceanic worms.
Leeches can primarily be found in freshwater lakes, ponds, or rivers. They range in size from 0.2 in (5 mm) to nearly 18 in (45 cm) and have two characteristic suckers located at either end of their bodies. Leeches consume the blood of a wide variety of animal hosts, ranging from fish to humans. To feed, a leech first attaches itself to the host using the suckers. One of these suckers surrounds the leech's mouth, which contains three sets of jaws that bite into the host's flesh, making a Y-shaped incision. As the leech begins to feed, its saliva releases chemicals that dilate blood vessels, thin the blood, and deaden the pain of the bite. Because of the saliva's effects, a person bitten by a leech may not even be aware of it until afterwards, when he or she sees the incision and the trickle of blood that is difficult to stop.
For centuries, leeches were a common tool of doctors, who believed that many diseases were the result of 'imbalances' in the body that could be stabilized by releasing blood. For example, leeches were sometimes attached to veins in the temples to treat headaches. Advances in medical knowledge led doctors to abandon bloodletting and the use of leeches in the mid-nineteenth century. In recent years, however, doctors have found a new purpose for leeches—helping to restore blood circulation to grafted or severely injured tissue.
Purpose
There are many occasions in medicine, mostly in surgery and trauma care, when blood accumulates and causes trouble. Leeches can be used to reduce the swelling of any tissue that is holding too much blood. This problem is most likely to occur in two situations:
- Trauma. Large blood clots resulting from trauma can threaten tissue survival by their size and pressure. Blood clots can also obstruct the patient's airway.
- Surgical procedures involving reattachment of severed body parts or tissue reconstruction following burns. In these situations it is difficult for the surgeon to make a route for blood to leave the affected part and return to the circulation. The hardest part of reattaching severed extremities like fingers, toes and ears is to reconnect the tiny veins. If the veins are not reconnected, blood will accumulate in the injured area. A similar situation occurs when plastic surgeons move large flaps of skin to replace skin lost to burns, trauma or radical surgery. The skin flaps often drain blood poorly, get congested, and begin to die. Leeches have come to the rescue in both situations.
Precautions
It is important to use only leeches that have been raised in the laboratory under sterile conditions in order to protect patients from infection. Therapeutic leeches belong to one of two species—Hirudo michaelseni or Hirudo medicinalis.
Description
One or more leeches are applied to the swollen area, depending on the size of the graft or injury, and left on for several hours. The benefits of the treatment lie not in the amount of blood that the leeches ingest, but in the anti-bloodclotting (anticoagulant) enzymes in the saliva that allow blood to flow from the bite for up to six hours after the animal is detached, effectively draining away blood that could otherwise accumulate and cause tissue death. Leech saliva has been described as a better anticoagulant than many currently available to treat strokes and heart attacks. Active investigation of the chemicals in leech saliva is currently under way, and one anticoagulant drug, hirudin, is derived from the tissues of Hirudo medicinalis.
Aftercare
The leeches are removed by pulling them off or by loosening their grip with cocaine, heat, or acid. The used leeches are then killed by placing them in an alcohol solution and disposed of as a biohazard. Proper care of the patient's sore is important, as is monitoring the rate at which it bleeds after the leech is removed. Any clots that form at the wound site during treatment should be removed to ensure effective blood flow.
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Risks
Infection is a constant possibility until the sore heals. It is also necessary to monitor the amount of blood that the leeches have removed from the patient, since a drop in red blood cell counts could occur in rare cases of prolonged bleeding.
Key terms
Leech Definition
Anemia — A blood disorder marked by low hemoglobin levels in red blood cells, which leads to a deficiency of oxygen in the blood.
Anticoagulant — A chemical or medication that prevents blood from clotting.
Resources
Periodicals
Daane, S., et al. 'Clinical Use of Leeches in Reconstructive Surgery.' American Journal of Orthopedics 26, no. 8 (August 1997): 528-532.
Gale Encyclopedia of Medicine. Copyright 2008 The Gale Group, Inc. All rights reserved.
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