Washington Esthetician State Board Practice Exam

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What are platelets essential for?

Transporting oxygen
Blood clotting
Carrying nutrients
Removing waste

The correct answer is: Blood clotting

Platelets play a crucial role in the process of blood clotting, which is essential for preventing excessive bleeding and facilitating wound healing. When a blood vessel is injured, platelets are activated and aggregate at the site of the injury. This aggregation forms a temporary "plug" that reduces blood loss. Additionally, platelets release substances that promote further clotting and the healing of the damaged tissue. While transporting oxygen is primarily the function of red blood cells, carrying nutrients is mainly handled by the plasma and various components within the blood. Similarly, waste removal involves other cells and the circulatory system's mechanisms but does not directly involve platelets. This distinct function of platelets makes them vital for maintaining hemostasis, which is the process that prevents and stops bleeding, thus supporting the body's overall healing processes.