Blood Clotting (CIE IGCSE Biology)
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Blood Clotting
- Platelets are fragments of cells which are involved in blood clotting and forming scabs where the skin has been cut or punctured
- Blood clotting prevents continued / significant blood loss from wounds
- Scab formation seals the wound with an insoluble patch that prevents entry of microorganisms that could cause infection
- It remains in place until new skin has grown underneath it, sealing the skin again
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