JBL EMT Practice Exam

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Bleeding is normally stopped by:

  1. Activation of platelets

  2. Arterial dilation

  3. Capillary rupture

  4. Increased white blood cells

The correct answer is: Activation of platelets

Bleeding is normally stopped by the activation of platelets. When a blood vessel is injured, platelets in the blood are activated and come together to form a plug at the site of the injury, helping to stop the bleeding. Platelets are essential in the process of hemostasis, which is the body's natural way of stopping bleeding. Arterial dilation, capillary rupture, and increased white blood cells are not directly involved in stopping bleeding.

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