click below
click below
Normal Size Small Size show me how
BLUE MOD
Blood, Lymph & Immune Short Answer
Question | 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 |