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An in-depth exploration of the lymphatic system, its two primary components - lymphatic vessels and lymphoid tissues and organs, and their respective functions. The role of various organs such as the spleen, thymus, tonsils, and peyer's patches, as well as the functions of lymph nodes, lymphatic ducts, and the thoracic duct. It also discusses the importance of malt (mucosa-associated lymphatic tissue) and salt (serous-associated lymphoid tissues) in the immune system.
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What are the two parts of the Lymphatic System? - correct answer 1)Lymphatic vessels and 2)Lymphoid tissues and organs What are the functions of the Lymphatic System? - correct answer To transport fluids back to blood and act as the bodies defense and resistance to disease. Returns excess interstitial fluid to Cardiovascular System Provides defense against infectious diseases and cancer Harbors leukocytes Absorbs dietary lipids from digestive tract List the organs involved in the Lymphatic System - correct answer Lymph Lymph nodes & vessels Spleen Thymus Tonsils SALT and MALT What is lymph? - correct answer excess tissue fluid How is Lymph made? - correct answer it is the interstitial fluid that is forced out at the beginning of the capillary beds and is not put back into the bloodstream. What parts of lymph are returned in the blood? - correct answer Dissolved protein and water
What are harmful materials that enter Lymphatic vessels? - correct answer Proteins, cell debris, cancer cells, bacteria, and viruses What is the role of Lymphatic collecting vessels? - correct answer To transport Lymph from Lymph capillaries to nodes where it is filtered until it's return to the circulatory veins What does the fluid return through to get to the circulatory veins near the heart? - correct answer the right Lymphatic duct and the thoracic duct What is the job of lymph nodes? - correct answer They help protect to the body by removing foreign materials such as bacteria and tumor cells Which leukocytes are present in lymph nodes? - correct answer lymphocytes (destroy specific invaders) and Macrophages (destroy non-specific invaders) What is the role of the spleen? - correct answer Filters blood of bacteria and viruses, destroys worn out RBC's, forms blood in fetus, stores some blood What is the role of the thymus? - correct answer functions at peak level during childhood only; produces thymosin to program lymphocytes What is the role of the tonsils? - correct answer trap and remove debris and foreign substances at pharynx What is the role of the Peyer's Patches? - correct answer Capture and destroy bacteria in intestines What is MALT? - correct answer (Mucosa-Associated Lymphatic Tissue) Protects respiratory and digestive tract
Provides immune activity around oral cavity Trap and digest bacteria and particulate matter T-Cell development Similar function to Peyer's patches Harbors beneficial bacteria for recolonizing colon Provides immune surveillance around small intestine Reduce bacterial numbers in GI tract Important for immune development Deep to skin and mucous epithelia Concentration of macrophages and lymphocytes in connective tissue Monitor for pathogen breach of skin and mucous membranes