Difference between revisions of "Lymphatic system"

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The '''lymphatic system''' is a network of vessels carrying lymph, or tissue-cleansing fluid, from the tissues into the [[vein]]s of the [[circulatory system]].
 
  
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The lymphatic system helps for absorbing nutrients from the [[small intestine]]s. A large portion of digested [[fats]] are absorbed via the lymphatic capillaries. Like the blood circulatory system, the lymphatic system is composed of fine capillaries that lie adjacent to the [[blood vessel]]s that merge into larger tributaries known as trunks, and then into larger vessels called ducts.
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The '''lymphatic system''' is a system  of vessels carrying lymph to the venous side of the circulatory system.  
  
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The thoracic and right lymphatic ducts empty into the venous system near the collarbones. [[Lymph]] is continuously passing through the walls of the capillaries. It transports nutrients to the cells and collects waste products. Most of the lymph returns to the venous capillaries; however about 10% enters the terminal lymphatic capillaries and returns to the blood through the lymphatic system. The fluid usually contains substances having large molecules (such as [[protein]]s and [[bacteria]]) that is too large for the venous capillaries.
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Apart from draining the tissues, it also helps in absorbing nutrients including fat globules from intestine.  
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Blockage of lymphatic system results in [[lymphoedema]] and can occur as a result of [[filariasis]]
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Along the lymphatic network in certain areas of the body (neck, armpit, groin, abdomen, chest) are small reservoirs, the lymph nodes, which collect bacteria and other deleterious agents and act as a barrier against these substances gettting into the bloodstream. In a diseased state the filled lymph nodes can become swollen or felt.  Enlarged lymph nodes can be a warning sign of various kinds of [[cancer]], including [[breast cancer]] and [[Hodgkin's disease]].
 
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In cases where a cancerous growth has developed, removal of lymph nodes may help to prevent its further spread. However, such a procedure also slows the flow of lymph and may thus render some of the body vulnerable to infection.  Generally speaking when cancer reaches the lymph nodes, it can spread throughout the body rather quickly.
 
  
 
== Sources ==
 
== Sources ==

Revision as of 19:14, November 18, 2007

The lymphatic system is a system of vessels carrying lymph to the venous side of the circulatory system.

Apart from draining the tissues, it also helps in absorbing nutrients including fat globules from intestine. Blockage of lymphatic system results in lymphoedema and can occur as a result of filariasis

Sources

http://encyclopedia2.thefreedictionary.com/lymph

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