After erythrocytes have circulated for about 120 days, they are removed by macrophages, which are mainly in the:
A) liver.
B) spleen.
C) appendix.
D) bone marrow.
Answer: B
Haematology
- Which of the following types of white blood cells contain preformed granules of vasoactive amines?
- Which of the following molecules is the insoluble end product of the clotting cascade?
- A 45-year-old female undergoes splenectomy to remove a tumor. Which of the following is most likely to occur following surgery?
- The predominant phagocyte of early inflammation is the:
- Monocytes are blood cells that mature (differentiate) into:
- Which is not considered a leucocyte ?
- Erythropoietin is produced in the:
- In addition to playing a role in hemostasis, platelets have the ability to:
- A newborn baby has a clotting disorder that results in her body being unable to produce thrombin. Which of the following phases of platelet degranulation would be impossible?
- Which electrolyte is necessary for normal platelet function?
- Recycled iron from macrophages is delivered to the bone marrow bound to:
- Fibrinolysis is mediated by:
- Plasma proteins synthesised by lymphocytes in the lymph nodes are:
- All of the following properties allow erythrocytes to function as gas carriers except:
- A new born baby is diagnose with a blood disorder in which her platelet count is low. Which of the following could be the reason:
- During an infection, lymph nodes enlarge and become tender because:
- The greatest proportion of total body iron is located in the:
- The main function of erythrocytes (RBC) is to:
- Blood volume of an average adult is about:
- A cell that can differentiate into any tissue type is referred to as:
- A group of cells is isolated in the laboratory. The cells have membrane-bound granules in their cytoplasm, and they show phagocytic activity. Which of the following cells is most similar?
- Which of the following molecules is the insoluble end product of the clotting cascade?
- Which of the following types of white blood cells contain preformed granules of vasoactive amines?
- The chemical events common to intrinsic and extrinsic pathways begin with: