Multiple choice

Which among the following is INCORRECT regarding the blood coagulation in human beings?

  1. Platelets are the fragments of megakaryocytes.

  2. Primary haemostasis initially involves vasodilation.

  3. Platelet activation stimulates production of thromboxane.

  4. Fibrin monomers get cross-linked by factor XIIIa.

  5. Clotting is initiated by exposure of tissue factor-bearing cells to plasma clotting factors.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Primary haemostasis initially involves vasoconstriction in response to vascular damage which limits blood loss, and subsequent platelet adhesion to the damaged area and activation due to exposure of subendothelial matrix.

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