Q:

Blood platelets

safaTerkawi
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2022-08-07
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 Blood platelets

  1. Are formed in the bone marrow
  2. Are normally more numerous than white cells.
  3. Have a small single-lobed nucleus
  4. Increase in number after injury and surgery.
  5. Alter shape when in contact with collagen
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safaTerkawi
2022-08-07
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 A. True  They are formed from megalokaryocytes.

B. True  By a factor of 20 or more.

C. False  No nucleus – but the cytoplasm contains electron dense granules, lysosomes and mitochondria.

D. True  This increases the tendency of blood to clot.

E. True  They put out pseudopodia and adhere to the collagen and to one another.

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