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Answers to various questions about the lymphatic system, including its composition, functions, and the role of lymphatic vessels, lymph nodes, and the thymus. It covers topics such as the transport of fluids and fats, the formation of lymph, and the immune functions of the lymphatic system.
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What is the lymphatic system composed of? - correct answer A network of vessels that circulate body fluids. What do the lymphatic vessels transport to the circulatory system? - correct answer Fats What is a function of the lymphatic system? - correct answer Transport excess fluid away from interstitial spaces between cells in most tissues and return it to the blood stream, Help defend body against invasion. What do lymphatic pathways start as? - correct answer Lymphatic capillaries that merge to form larger vessels that empty into the circulatory system. What are lymph nodes? - correct answer Mass of lymphoid tissue What are lymphatic capillaries? - correct answer Tiny, closed-ended tubes that extend into interstitial spaces. What do lymphatic capillaries receive? - correct answer Tissue fluid, once reached it is called edema How are lymphatic vessels compared to those of veins? - correct answer They are thinner What do large lymphatic vessels pass through and merge to what? - correct answer Pass through lymph nodes and merge to form lymphatic trunks. What do lymphatic trunks drain? - correct answer Lymph from the body
What is lymph? - correct answer Tissue fluid What forces fluid into lymphatic capillaries? - correct answer Increasing Interstitial pressure forces When does tissue fluid become lymph? - correct answer Tissue fluid becomes lymph once it has entered a lymphatic capillary; lymph formation depends on tissue fluid formation. What is tissue fluid made up of? - correct answer Water and dissolved substances that leave blood capillaries by filtration and diffusion. What drives the entry of lymph into lymphatic capillaries - correct answer Hydrostatic pressure of tissue fluid. What propel lymph through lymphatic vessels? - correct answer Skeletal muscle contraction, breathing movements, and contraction of smooth muscle in the walls of lymphatic trunks. What is edema? - correct answer The accumulation of excess interstitial fluid leading to swelling of tissues Where are Lymph nodes located? - correct answer Along lymphatic pathways, which occur in chains along the parts of the larger lymphatic vessels What is Hilum? - correct answer The indented region of a lymph node What do lymph nodes contain? - correct answer Lymphocytes and macrophages What are lymph nodes covered with? - correct answer Connective tissue
What does red pulp contain? - correct answer Red blood cells, macrophages, and lymphocytes What is a pathogen? - correct answer Disease causing agents, can produce infections within the body A chemical that stimulates B lymphocytes to produce antibodies? - correct answer Antigen Contains an antigen that can stimulate primary immune response against a particular diseas causing agent? - correct answer Vaccine What is an allergic reaction? - correct answer An immune attack against a non- harmful substance. What is another name for allergic reaction? - correct answer Hypersensitivity reaction What are lymphatic vessels called? - correct answer Lacteals