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Review - Questions
Term | Definition |
---|---|
Describe platelets | thrombocytes, smalled formed elements found in the blood, not true cells; fragments of cells, initiate blood clotting, hemostasis |
Describe red blood cells | transport O2/co2, most numerous circulating blood cells, during erythropoeisis they decrease in size, develop Hb/Hgb (give them their red colour), Hb carries O2 to body tissues and exchanges it for CO2, shaped like biconcave disks |
Describe 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 Tcells, located in Mediastinum |
Describe the tonsils | masses of lymphatic tissue, protect upper respiratory structure, acts as a filter |
Describe WBCs | protect the body from pathogens, remove debris, aid in the healing process, diapedesis, initiate inflammation and immune response, phagocytic, granulocyte & agranulocyte, migrate through capillaries & venues |
List autoimmunne diseases | AIDS, RA, MG, ALLERGIES, thrombocytopenia, vasculitis, SLE |
What is the function histamines? | initiate the inflammatory process by increasing blood flow |
What are the 2 ducts of the lymph system | Right lymphatic duct, thoracic duct (left side) |
What are the 4 types of T cells? | 1. cystotoxic 2. helper cell 3. suppressor cell 4. memory T-cell |
what are the functions of the lymph system? | maintaining fluid balance of body, transporting lipids away from the GI system, filtering and removing unwanted or infections products. |
what is an allergy | acquired abnormal immune response |
what is hematology | studies blood cells, blood-clotting mechanisms, bone marrow and lymph nodes |
What is heparin | acts to prevent blood from clotting at injury site |
Where do blood cells develop from? | stem cells |