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Blood, Lymph & Immune Short Answer

Describe platelets thrombocytes, cell fragments, initiate blood clotting, smallest formed elements found in the blood, hemostasis
Describe red blood cells erythrocytes, transport O2 and CO2, most numerous circulating blood cells, during erythropoiesis they decrease in size, shaped in biconcave disks, develop Hb/Hgb (gives them their red colour), Hb carries O2 to body tissue and exchanges it for CO2
Describe the spleen acts as a filter, resembles a lymph node, Destroys old RBCs, stores healthy blood cells
Describe the thymus responsible for cellular immunity, transforms lymphocytes into T cells, located in the mediastinum
Describe the tonsils Masses of lymphatic tissue(palatine) located in the pharynx, protect upper respiratory structures -acts as filters
Describe white blood cells protect the body from pathogens, remove debris from injured tissue, aid in healing process, diapedesis, initial inflammation & immune response -phagocytic -some granulocytes, some agranulocytes -migrate through capillaries & venules
List autoimmune diseases Myasthenia gravis -rheumatoid arthritis -systemic lupus erythematosus -AIDS -allergies -thrombocytopenia -vasculitis
What is the function of histamines? initiates the inflammatory process by increasing blood flow
What are the two ducts of the lymph system? thoracic duct and right lymphatic duct
What are the four types of T cells? cytotoxic, helper, suppressor and memory
What are the functions of the lymph system? -maintain fluid balance -transport lipids away from GI system -filter and remove unwanted infectious products
What is an allergy? acquired abnormal immune response
What is hematology? study of blood cells, blood clotting mechanism, bone marrow & lymph nodes
What is heparin? acts to prevent blood from clotting at the injury site
Created by: lexieeesmith



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