Medical MCQs

5099 MCQs  (Page 470 of 510)

Blood cells arise in bone marrow and are subject to______________?
A. Irregular renewal
B. Regular renewal
C. Infrequent renewal
D. None of the above
Citrate is a useful anticoagulant because of its ability to_____________?
A. Buffer basic groups of coagulation factors
B. Bind factor xii
C. Bind vitamin k
D. Chelate calcium
AB group has following agglutinins_______________?
A. Anti – a & anti – b
B. Neither anti a nor anti – b
C. Anti – a
D. Anti – b
The tissue macrophages are derived from the________________?
A. Neutrophil
B. Eosinophil
C. Monocyte
D. All of the above
Which of the following is not a cause of secondary polycythemia ?
A. High altitude
B. Myeloproliferative changes
C. Pheochromocytoma
D. Cerebellar hemangioblastoma