Which of the following statements about platelets is INCORRECT?
- Platelets are essential for clotting process.
- Platelets are fragments of a larger cell called megakaryocyte.
- The life span of platelets is 30 to 60 days.
- The formation of platelets is regulated by the hormone thrombopoietin.
- Platelets contain serotonin, ADP, calcium and PDGF.
Answer: The life span of platelets is 30 to 60 days.
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Blood
- Which of the following is NOT a characteristic of blood?
- Which of the following is a protective function of blood?
- Which leukocyte contains histamine in its granules?
- When red blood cells transport respiratory gases
- The terms biconcave and anucleated apply to
- The most numerous leukocyte is the
- The final step in clot formation is
- Renal dialysis patients usually suffer from anemia because
- Pernicious anemia may result from
- Mature red blood cells in the circulating blood are filled with
- Granulocytes do NOT include
- During the life cycle of red blood cells,
- Diapedesis refers to
- Blood group O
- A major plasma protein that maintains the blood osmotic pressure is
- A healthy adult male individual contains about ___ liters of blood.