A hospital laboratory technologist is analyzing the complete blood count (CBC) of a patient. Which of the following statements best reflects an aspect of the platelets that would constitute part of the CBC?
A)
Platelets originate with granulocyte colony-forming units (CFU).
B)
The half-life of a platelet is typically around 8 to 12 days.
C)
The ?-granules of platelets contribute primarily to vasoconstriction.
D)
New platelets are released from the bone marrow into circulation.
Ans:
B
Feedback:
Platelets' half-life is typically around 8 to 12 days. They originate from megakaryocytes, and δ-granules facilitate vasoconstriction. New platelets are released from the spleen into circulation.
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