Anatomy and Physiology Lymphatic System

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. ANATOMY AND PHYSIOLOGYLymphatic System The lymphatic system consists of organs, ducts, and nodes. It transports a watery clear fluid called lymph. This fluid distributes immune cells and other factors throughout the body. It also interacts with the blood circulatory system to drain fluid from cells and tissues. The lymphatic system contains immune cells called lymphocytes, which protect the body against antigens (viruses, bacteria, etc.) that invade the body. See more on lymphocytes below. Mai
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  . ANATOMY AND PHYSIOLOGYLymphatic System The lymphatic system consists of organs, ducts, and nodes. It transports a watery clear fluidcalled lymph. This fluid distributes immune cells and other factors throughout the body. Italso interacts with the blood circulatory system to drain fluid from cells and tissues. Thelymphatic system contains immune cells called lymphocytes, which protect the body againstantigens (viruses, bacteria, etc.) that invade the body. See more on lymphocytes below.Main Functions of Lymphatic System To collect and return interstitial fluid, including plasma protein to the blood,and thus helpmaintain fluid balance, To defend the body against disease by producing lymphocytes, To absorb lipids from the intestine and transport them to the blood.Lymph organs include the bone marrow, lymph nodes, spleen, and thymus. Precursor cells inthe bone marrow produce lymphocytes. B-lymphocytes (B-cells) mature in the bone marrow. T-lymphocytes (T-cells) mature in the thymus gland.  Lymph Nodes - A lymph node is an organized collection of lymphoid tissue, through whichthe lymph passes on its way to returning to the blood. Lymph nodes are located at intervalsalong the lymphatic system. Several afferent lymph vessels bring in lymph, which percolatesthrough the substance of the lymph node, and is drained out by an efferent lymph vessel.
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