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Bio 202 The Lymph

Bio 202 The Lymphatic System

Term Explanation
Right Lymphatic Duct drains upper right side of head and thorax and right arm. Deposits lymph into right subclavian vein.
Thoracic Duct Drains rest of body. Cisterna chili collects lymph from lower half of body and digestive organs. Deposits lymph into junction of internal jugular and left subclavian vein.
Spleen Found in left side of abdominal cavity.
Spleen 2 Site of lymphocyte (B cell) proliferation, immune surveillance and response.
Spleen 3 Extracts aged and defective blood cells and platelets, debris, foreign matter, bacteria, viruses, toxins.
Spleen 4 Stores recyclable products from blood (iron)
Spleen 5 RBC production in fetus
Spleen 6 Stores platelets
Thymus Found in mediastinum, size of T cell maturation.
Tonsils Pharyngeal, Palatine, Lingual
Lymph Transport Similar to venous return (skeletal muscle contraction and valves)
Lymph Transport 2 Pulsation of arteries and smooth muscle in lymphatic trunks (large vessels) and thoracic duct also help return lymph
Lymph Transport 3 Immobilizing a badly infected body part will hinder the flow of inflammatory material
Lymph Transport 4 3 L returns in 24 hrs
Lymph Nodes Found in three areas: inguinal, axillary, and cervical
Lymph Nodes 2 Act as lymph filters and activate the immune system by allowing maturation of lymphocytes and conversion of phagocytic macrophages
Lymph Nodes 3 Also includes Peyer's patches in intestine (similar to tonsils)
General Information 3 L of fluid remains in interstitial spaces everyday. Lymph capillaries found in loose connective tissues return the fluid (not present in bone marrow or CNS)
General Information 2 Vessels are a one-way transport system from tissues to circulation
General Information 3 Proteins, cell debris, pathogens, and cancer cells can all enter lymph capillaries
General Information 4 Lacteals in villi of intestinal mucosa absorb digested fats
General Information 5 Lymph ends up in lymphatic collecting vessels that are thinner walled, have more valves, and anastomize more that veins. Found with superficial veins, but deep lymphatic vessels are with deep arteries
General Information 6 Red lines = lymphatics severely inflamed