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Lymphatic system

TermDefinition
Lymphatic system consists of: Lymph Lymph vessels Lymph nodes Spleen Thymus Tonsils Adenoids Lacteals (villi)
Lymph Clear liquid (tissue fluid) collected around the cells and returned to the bloodstream (subclavian vein)
Lymph vessels Tubes that transport lymph
Lymph nodes Swellings that contain many WBC. found at the armpit, neck and groin
Spleen Organ to the left of the stomach. Destroys defective RBCs. Filters blood for bacteria and pathogens
Thymus (Endocrine gland) located behind your sternum. T-cells mature here
Adenoids and tonsils Located at the back of the nasal cavity and back of the mouth Kill pathogens during infection
Functions of the lymphatic system Transport role Defence roles
Transport role - lacteal Fat is broken down into glycerol and fatty acids by the enzyme lipase in the small intestine. Absorbed into the lacteals in the villi, which connects to the lymphatic system.
Transport role - returning Tissue fluid and plasma proteins that have leaked from capillaries are returned to blood
Defence role - filter Lymph nodes filter plasma
Defence role - production Production of lymphocytes (B cells and T cells)
Defence role - infection fighting Lymphocytes detect antigens and produce antibodies.
Created by: EObrienHart
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