When skin is cut or damaged, tiny cell fragments circulating in the blood, called platelets, arrive at the injury and spread out to stop the blood from leaking out. Once enough layers of platelets ...

When skin is cut or damaged, tiny cell fragments circulating in the blood, called platelets, arrive at the injury and spread out to stop the blood ...

Clotting is initiated by two processes or pathways - a slower but larger intrinsic pathway (contact activation pathway) or a very rapid extrinsic pathway (tissue factor pathway) - which lead to ...