Blood Clotting

 

Guarda e ascolta l'animazione della BBC sulla coagulazione del sangue ("blood clotting") e riempi gli spazi vuoti con la parola giusta, poi clicca su "Controlla" per verificare le tue risposte
A cut in the must be closed quickly, so that cannot enter the caused infection. contains tiny structures called platelets. When a blood vessel is cut or broken, block the hole: they’re stopped together by threads of a called fibrin. These meshed platelets, red blood and , creates a which seals the cut. The can now heal with reduced risk of .”