For a person whose hematocrit is 45%, a. plasma volume would be 55% of total blood volume b. plasma volume would be 45% of total blood volume c. red blood cell volume would be 55% of total blood volume d. white blood cell volume would be 45% of total blood volume       All of the following characteristics of platelets are true EXCEPT a. Exhibit many vesicles b. Have nucleus c. Platelets are fragments of megakaryocytes d. Smallest size compared to other blood cellular components of 2- 4 μm     If someone has no megakaryocytes, he/she will a. not be able to phagocytize bacteria b. have a reduced ability to prevent blood loss c. not be able to make red blood cells d. not be able to make white blood cells

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