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Which blood component helps to plug leaks in blood vessels by aiding in clot formation at points of injury?

Question
Which blood component helps to plug leaks in blood vessels by aiding in clot formation at points of injury?
Red blood corpuscles
Plasma proteins only
Platelets
White blood cells
Answer
Platelets
Detailed Explanation
Platelet cells circulate around the body and help clot the blood at points of injury, minimising blood loss.
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