Lymphatic system

The lymphatic system (or lymphatic network ) is consisted of the functional whole of the Lymphatic vessels, of the lymphatic ganglia, the MALT, the osseous Moelle, as well as bodies such as Rate, Thymus which allow the circulation and the renewal of the Lymphe. These fabrics belong to the lymphoid Tissu except for osseous marrow.

Its role

Its main role is to allow circulation in all the body and out of the blood-vessels of the Anticorps and the Macrophage S to allow the activation of the specific immunizing response. It is an essential component of the Immune system and processes cicatricial. Also a lack of movement or an attack of this system can result by a form of cellulitis and in edema S.

Its operation

All the body, except for the Brain, lays out of networks of lymphatic vessels parallel with the Veine S. the lymph, liquid interstitial circulating in the lymphatic vessels, takes care of part of waste of the cellular activity via intercellular fabrics. The lymph is purified by the passage in the ganglia. It circulates then towards the Cœur where it joined blood circulation by the thoracic Canal and throws itself in the left Veine subclavian.

With the difference in the blood network, the lymphatic system does not comprise a body ensuring the role of pump. Circulation results from the movements of the body, the contractions of the muscles, the contractions of smooth fibers of the walls of the lymphatic vessels, and the fact that the largest vessels have Valvule S to prevent the backward flow. If the movements of the body or the physical-activity intensify, the lymph will circulate more quickly: it circulates roughly 100 ml of lymph per hour in the thoracic channel of a man at rest whereas during a exercise, this flow can be 10 to 30 times higher. On the contrary, prolonged immobility obstacle the drainage of the lymph.

The metastasis S of some Cancer S can diffuse in the body by the lymph.

Media

Modeling of general and lymphatic blood circulation (animation flash).

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