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Blood platelets A. Are formed in the bone marrow. B. Are normally more numerous than white cells. C. Have a small single-lobed nucleus. D. Increase in number after injury and surgery. E. Alter shape when in contact with collagen. |
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Answer» 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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