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Lymphatic System

Lymphatic System. By: Lena Andrist and Katie Donelson. Function of Lymphatic System. -Responsible for the removal of interstitial fluid from tissues. -Absorbs and transports fatty acids from the digestive system.

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Lymphatic System

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  1. Lymphatic System By: Lena Andrist and Katie Donelson

  2. Function of Lymphatic System • -Responsible for the removal of interstitial fluid from tissues. • -Absorbs and transports fatty acids from the digestive system. • -Transports white blood cells to and from the lymph nodes into the bones. • -An important role of the Lymphatic system is to return plasma proteins into the bloodstream. • -They are a defense mechanism against the body, they filter out micro organisms and foreign substances.

  3. Organs of lymphatic system • -Lymph nodes; they filter lymph and fight infection • -Thoracic duct; they return cleansed lymph to blood supply • -Thymus gland; generates T cell lymphocytes • -Spleen; lymphatic tissues filter blood and removes cellular debris • -Galt; surrounds intestines, counteracts infection and absorbs fats • -Lymphatic vessels; act as reservoirs for plasma and other substances • -Bone Marrow; generates B cell lymphocytes

  4. Lymph Nodes • -Located in under arms, groin, and neck • -Children between the ages of 10 to 12 years old usually have larger lymph nodes. • -The lymph nodes filter and monitor the lymph for foreign particles. • -When you have a cold or any other infectionyour lymph nodes, may swell, as lymphocytes fight germs • -Human lymph nodes are bean-shaped • -They range in size from a few millimeters to about 1–2 cm in their normal state • -Lymph nodes are guards of B, T, and other immune cells

  5. Thymus • -A two lobed organ located in upper chest • -The thymus gland is a pink-grey organ that lies underneath the top of the breast bone. • -It’s primary function is to mature lymphocytes • -The T cells travel from the bone marrow to the thymus gland to mature • -The thymus also produces a hormone called thymosin • -After the age of puberty it gradually becomes smaller.

  6. Spleen • -Located in the upper far left part of the abdomen, to the left of the stomach • -It acts as a filter for blood • -The spleen also helps fight certain kinds of bacteria • -It is the largest single mass of lymphoid tissue in the body • -It does however sometimes need to be removed: it can suffer hidden injury

  7. Bone marrow • Bone marrow plays an important role in this system; • Bone marrow produces lymphocytes that are then transferred to the thymus to mature. • This is why when a person who has an illness where bone marrow is destroyed the persons immune system is very immensely weakened (sudden lack of white blood cells)

  8. Cells • -In the lymph nodes there are armies of white blood cells (lymphocytes) that destroy germs • -There are two kinds of lymphocytes; B-cells and T-cells • -B-cells develop into plasma cells that make antibodies to attack bacteria • -There are two kinds of T cells; Helper and Killer • -Helper T-cells alarm killer T-cells to multiply • -Killer T-cells destroy the cells that the helpers have identifited

  9. Lymphoma • -A type of blood cancer • -Happens when lymphocytes begin behaving abnormally • -2 forms Hodgkin and Non Hodgkin • -The main difference between the two is in the specific lymphocyte each involves. • -Lymphoma typically is present as a solid tumor of lymphoid cells • -This cancer can be curable depending on the type, and stage of the disease • -30-60% of patients with an aggressive form of Lymphoma can be cured

  10. Lymphoedema • -Is an accumulation of lymphatic fluid that causes swelling. • -Mostly in arms and legs • -Develops when lymphatic vessels are missing, impaired, damaged or when lymph nodes have been removed • -Symptoms include; swelling of limbs, feelings of heaviness or tightness in limbs and restricted range of motion. • -Treatment includes; complex decongestive therapy. • -Longer term infection of elephantitis can lead to • Lymphoedema.

  11. Fun facts • -This system consists of organs, ducts, and nodes • The lymphatic system is sometimes called your body’s sewer • -The Lymphatic system is network of “pipes” that drains waste from the cells • -These ‘pipes’ of the lymphatic system are called lymphatics or lymph vessels • -The lymphatic system removes excess fluid, and waste products from the spaces between the cells

  12. Sources: • http://www.houseandhome.org/lymphatic-system-facts • http://www.funtrivia.com/en/SciTech/Lymphatic-System-18883.html • http://www.encyclopedia.com/topic/lymphatic_system.aspx • http://www.lymphnotes.com/article.php/id/151/ • http://www.nlm.nih.gov/medlineplus/ency/article/003097.htm • http://www.lymphomation.org/lymphatic.htm

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