Question

platelets stop the blood at injury site by clotting it how?​

Answer 1

║⊕ANSWER⊕║

WHAT ARE PLATELETS?

• Platelets are tiny blood cells that help your body form clots to stop bleeding.

HOW DO PLATELETS HELP?

• If one of your blood vessels gets damaged, it sends out signals to the platelets.
• The platelets then rush to the site of damage.
• They form a plug (clot) to fix the damage.

Answer 2

Answer:

• Platelets disintegrate at the site of wound to release a substance thrombokinase.
• Thrombokinase acts as an enzyme, with help of calcium ions converts inactive prothrombin to active thrombin.
• Thrombin in presence of calcium ions reacts with soluble Fibrinogen to convert it to insoluble Fibrin.
• This fibrin forms mess at the wound and blood clotting is done.

hope it helps..

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