GER412 ASSIGN 8 BODY DEF - GER-412-OL-009 Identify the...

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GER-412-OL-009 Identify the stage of defense delivered by the following components of the immune system: Lymphatic vessels: Carries lymph, transports fluid that carries WBC (lymphocytes). Without functioning lymph vessels, lymph cannot be drained and swelling results. The largest lymph vessel, the thoracic duct, empties into the left subclavian vein. It collects all lymph from all of the body except the right arm and right side of the head that will be going into the right subclavian vein. Antigens are carried through this system to the lymph nodes. Upper body lymph nodes: (adenoid & tonsils) These lymph nodes provide a meeting ground for immune system cells, trap infectious agents like viruses and bacteria and provide antibodies. They provide defense against inhaled substances and as a result they are one of the first organized lymphoid structures to encounter antigens once it enters into tissue spaces Lower body lymph nodes: One of the sites where immune system responses are mounted to antigens in lymph, they
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