JBL EMT Complete Practice Exam 2025

Question: 1 / 400

What is the primary role of platelets in the circulatory system?

Carry oxygen

Platelets' primary role in the circulatory system is not to carry oxygen, fight infection, or transport nutrients. Platelets are actually responsible for forming blood clots. When there is a cut or injury, platelets rush to the site to help stop the bleeding by forming a clot. This clotting process is crucial for preventing excessive blood loss and promoting wound healing.

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Fight infection

Form blood clots

Transport nutrients

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