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5 Cards in this Set
- Front
- Back
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What is thr relationship between hemophilia and the liver?
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Hemophilia is due to a genetic loss of clotting factor V111. Most clotting factors are formed in the liver. If vit. K can correct the problem, this implies that the liver is functioning properly. Vit. K is a fat soluble vitamin and absorbed from the intestine, along with fats. If the patient is deficient in vit K, the clotting deficiency can be corrected by an injection of vit K. Antithrombin 111 has no relationship to factor 1X.
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Presentation of an antigen on an infected cell results in activation of the cytotoxic T cells to kill the infected cell. TRUE/FALSE
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TRUE. Presentation of an antigen by macrophages activates helper T cells, leading to antibody formation.
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What is the normal MCV of RBC?
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App. 90fL. RBC that have an increased MCV are considered macrocytic. Causes are vit B12 and folic acid deficiency. With acute blood loss, RBC production is increased, and the cells are normal or slightly smaller. Hereditary spherocytosis is a condition in which the RBC are rounded and smaller.
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A patient suffers from a congenital deficiency of factor X111(fibrin stabilizing factor) What would analysis of his blood reveal?
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Fibrin monomers polymerize to form a clot. A strong clot requires the presence of fibrin stabilizing factor, which is released from platelets within the clot.
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What is the first cellular event during an inflammatory state?
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Activation of tissue macrophages. This is followed by invasion of neutrophils and monocytes, in that order, and finally there is an increase in the production of WBC by the bone marrow.
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