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Paper 3Theory (Core)2 marks
Blood clotting is a process that helps prevent blood loss and infection when blood vessels are damaged.
Description
Blood Clotting Process
When a blood vessel is injured, platelets stick to the damaged area and release chemicals. These chemicals cause fibrinogen to change into fibrin, which forms a mesh trapping blood cells and forming a clot.
- a[1]
State one way blood clotting prevents blood loss.
Aim for approximately 1 distinct marking point.
- b[1]
Identify one way blood clotting helps prevent infection.
Aim for approximately 1 distinct marking point.
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