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{{DISPLAYTITLE:Lymphatic System}} | |||
== | ==Lymphatic System== | ||
[[File:Hylas_nymphs_Massimo_Inv423108.jpg|thumb|right|300px|Artistic depiction of lymphatic vessels as nymphs.]] | |||
The '''lymphatic system''' is a vital part of the [[immune system]], comprising a network of [[lymphatic vessels]] that carry a clear fluid called [[lymph]] towards the [[heart]]. It plays a crucial role in maintaining [[fluid balance]] in the body, absorbing [[fats]] and fat-soluble nutrients from the digestive system, and defending the body against [[pathogens]]. | |||
== | ==Components== | ||
The lymphatic system | The lymphatic system consists of several key components: | ||
===Lymph=== | |||
Lymph is a clear fluid that originates from [[interstitial fluid]] in the tissues. It is collected through lymphatic capillaries and transported through larger lymphatic vessels. Lymph contains [[lymphocytes]], which are critical for immune responses. | |||
===Lymphatic Vessels=== | |||
Lymphatic vessels are thin-walled, valved structures that carry lymph. They are similar to [[veins]] and are responsible for returning lymph to the [[circulatory system]]. | |||
===Lymph Nodes=== | |||
[[Lymph nodes]] are small, bean-shaped structures located along the lymphatic vessels. They filter lymph and house [[immune cells]] that can respond to pathogens. | |||
== | ===Lymphoid Organs=== | ||
The | The primary lymphoid organs include the [[thymus]] and [[bone marrow]], where lymphocytes are produced and mature. Secondary lymphoid organs include the [[spleen]], [[tonsils]], and [[Peyer's patches]] in the [[small intestine]]. | ||
==Functions== | |||
The lymphatic system has several important functions: | |||
== | ===Fluid Balance=== | ||
The lymphatic system helps maintain fluid balance by returning excess interstitial fluid to the bloodstream, preventing [[edema]]. | |||
== | ===Fat Absorption=== | ||
In the [[small intestine]], specialized lymphatic vessels called [[lacteals]] absorb dietary fats and fat-soluble vitamins, transporting them to the bloodstream. | |||
[[ | ===Immune Response=== | ||
[[ | The lymphatic system is integral to the immune response. Lymph nodes filter pathogens from lymph, and lymphocytes within the nodes can mount an immune response. | ||
[[ | |||
[[Category: | ==Clinical Significance== | ||
[[Category: | Disorders of the lymphatic system can lead to various health issues: | ||
===Lymphedema=== | |||
[[Lymphedema]] is a condition characterized by swelling due to the accumulation of lymph fluid, often resulting from damage to or removal of lymph nodes. | |||
===Lymphoma=== | |||
[[Lymphoma]] is a type of cancer that originates in the lymphatic system, affecting lymphocytes. | |||
===Infections=== | |||
Infections such as [[lymphangitis]] and [[lymphadenitis]] can occur when pathogens invade the lymphatic system. | |||
==Related pages== | |||
* [[Immune system]] | |||
* [[Circulatory system]] | |||
* [[Thymus]] | |||
* [[Spleen]] | |||
* [[Lymphocyte]] | |||
[[Category:Anatomy]] | |||
[[Category:Immune system]] | |||
Latest revision as of 11:12, 15 February 2025
Lymphatic System[edit]

The lymphatic system is a vital part of the immune system, comprising a network of lymphatic vessels that carry a clear fluid called lymph towards the heart. It plays a crucial role in maintaining fluid balance in the body, absorbing fats and fat-soluble nutrients from the digestive system, and defending the body against pathogens.
Components[edit]
The lymphatic system consists of several key components:
Lymph[edit]
Lymph is a clear fluid that originates from interstitial fluid in the tissues. It is collected through lymphatic capillaries and transported through larger lymphatic vessels. Lymph contains lymphocytes, which are critical for immune responses.
Lymphatic Vessels[edit]
Lymphatic vessels are thin-walled, valved structures that carry lymph. They are similar to veins and are responsible for returning lymph to the circulatory system.
Lymph Nodes[edit]
Lymph nodes are small, bean-shaped structures located along the lymphatic vessels. They filter lymph and house immune cells that can respond to pathogens.
Lymphoid Organs[edit]
The primary lymphoid organs include the thymus and bone marrow, where lymphocytes are produced and mature. Secondary lymphoid organs include the spleen, tonsils, and Peyer's patches in the small intestine.
Functions[edit]
The lymphatic system has several important functions:
Fluid Balance[edit]
The lymphatic system helps maintain fluid balance by returning excess interstitial fluid to the bloodstream, preventing edema.
Fat Absorption[edit]
In the small intestine, specialized lymphatic vessels called lacteals absorb dietary fats and fat-soluble vitamins, transporting them to the bloodstream.
Immune Response[edit]
The lymphatic system is integral to the immune response. Lymph nodes filter pathogens from lymph, and lymphocytes within the nodes can mount an immune response.
Clinical Significance[edit]
Disorders of the lymphatic system can lead to various health issues:
Lymphedema[edit]
Lymphedema is a condition characterized by swelling due to the accumulation of lymph fluid, often resulting from damage to or removal of lymph nodes.
Lymphoma[edit]
Lymphoma is a type of cancer that originates in the lymphatic system, affecting lymphocytes.
Infections[edit]
Infections such as lymphangitis and lymphadenitis can occur when pathogens invade the lymphatic system.